Search: 92 results found for "ruby in matrix"

Ruby in Serpentine Egg | 75 × 57mm

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Dhs. 75.00

Ruby Cabochon 25gr

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~~Dhs. 619.00~~ Dhs. 372.00

Ruby with Mica Specimen 24.5gr

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Dhs. 619.00

Rough Ruby 7.65gr

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~~Dhs. 134.00~~ Dhs. 75.00

Natural Hexagonal Rough Ruby 2cm Rough Crystals Tali & Loz Crystals

Natural Hexagonal Rough Ruby 2cm, India

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Dhs. 189.00

Ruby in Zoisite Egg 4cm

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~~Dhs. 60.00~~ Dhs. 38.00

Ruby in Zoisite Tumblestones 20-30mm

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~~Dhs. 38.00~~ Dhs. 20.00

Rubellite Tourmaline in Quartz Matrix | 53mm | Brazil

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Dhs. 322.00

Mosasaurus Tooth In Matrix | 168gr | Morocco

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Dhs. 149.00

Mosasaurus Tooth In Matrix 228g, Morocco Fossil Tali & Loz Crystals

Mosasaurus Tooth In Matrix | 228gr | Morocco

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Dhs. 149.00

Emerald Triplet | Multi-Column Growth | 47.43g | Colombia

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Dhs. 2,451.00

Eudialite | Polished Slice | 110mm | Russia

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Dhs. 966.00

Pallasite Meteorite Slices | Seymchan, Russia | A or B

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Dhs. 1,362.00

Pallasite Meteorite Slices | Seymchan, Russia

A rare piece of extraterrestrial material from Seymchan, Russia, offered as two individual pallasite slices for you to choose from.

Each triangular slice has a polished, dark silver-grey iron-nickel matrix with contrasting olivine crystals scattered through the stone. In the backlit view, the olivine shows olive-green to warm golden tones while the metal remains silver-grey, making the natural distribution of metal and stone especially clear.

Pallasites are stony-iron meteorites formed at the boundary between a planetary core and mantle. Their otherworldly structure makes them a compelling choice for collectors drawn to natural history, space material and unusual mineral specimens.

Pallasite is associated in crystal lore with grounding, strength and transformation, and is often linked with the Root and Solar Plexus Chakras. A striking companion for anyone fascinated by meteorites and the deeper story of our solar system.

Specifications — see variant selected at checkout:
Origin: Seymchan, Russia

Piece	Size	Weight	Price	SKU
A	47 × 24 × 2 mm	8.11 g	£275	7987-653-276
B	49 × 26 × 2 mm	7.6 g	£275	7987-653-277

Two pieces available, one of each. Choose Piece A or Piece B from the dropdown. No display stand is included. Each piece is sold as seen.

Red Phantom Quartz Cluster | 110mm | Morocco

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Dhs. 471.00

Blueberry Fluorite on Quartz | 48mm | Huanggang Mine, Inner Mongolia

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Dhs. 545.00

Blueberry Fluorite on Quartz | 69mm | Huanggang Mine, Inner Mongolia

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Dhs. 1,733.00

Drilled Yowah Boulder Opal Pendant 6.85gr Rocks & Fossils Tali & Loz Crystals

Drilled Yowah Boulder Opal Pendant | 6.85g | Australia

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~~Dhs. 817.00~~ Dhs. 409.00

Chrysoberyl with Quartz & Mica | 46.46g | Mozambique

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Dhs. 372.00

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Almandine Garnet: Worn by Anglo-Saxon Kings, Used in Sandpaper, and Your Collection

What is Almandine Garnet? Mineral Group: Silicate | Category: Garnet Group, Nesosilicate | Formula: Fe₃Al₂(SiO₄)₃ | Hardness: 7 to 7.5 (Mohs) Almandine is the most abundant and widely distributed member of the garnet group, an iron aluminium nesosilicate mineral found in metamorphic rocks on every continent. Its deep red to reddish-brown coloration, produced by iron in the Fe²⁺ oxidation state within the garnet structure, has made it the garnet most commonly encountered in jewellery, in geology, and in mineral collections throughout human history. When most people think of garnet, the deep red stone they picture is almost certainly Almandine or a solid solution with significant Almandine component. The name derives from Alabanda, an ancient city in Asia Minor, modern-day Turkey, which was a significant centre of garnet trade and cutting in antiquity. The association between the city and the red stone it traded in gave rise to the mineral name, and Almandine has been recorded in natural history texts since at least Roman times. Pliny the Elder describes carbunculus, the Roman term for red gemstones including Almandine Garnet, in his Natural History, and the mineral appears in jewellery recovered from archaeological sites across Europe, the Near East, and Central Asia dating back several thousand years. Almandine belongs to the garnet group, a family of nesosilicate minerals sharing the same fundamental cubic crystal structure but differing in their chemical composition across the X and Y cation sites of the general garnet formula X₃Y₂(SiO₄)₃. In Almandine, iron in the Fe²⁺ state occupies the X sites and aluminium occupies the Y sites. This specific combination produces the deep red colour and the physical properties that define the species. Formation and Geological Context Almandine is a characteristic mineral of regionally metamorphosed rocks, forming under the moderate to high pressure and temperature conditions associated with amphibolite and granulite facies metamorphism. It develops during the prograde metamorphism of pelitic rocks, those originally rich in clay minerals and aluminous sediments, as the increasing temperature and pressure drive the recrystallisation of existing minerals into new, more stable assemblages. Almandine is one of the index minerals used in metamorphic petrology to identify specific pressure-temperature conditions in metamorphic terranes. The growth of Almandine crystals in metamorphic rocks is a relatively slow process driven by solid-state diffusion of ions through the surrounding mineral matrix. As a result, well-formed Almandine crystals in schists and gneisses record the full prograde metamorphic history of the rock in their zoning patterns: the core of a crystal records the earliest stages of garnet growth at lower temperatures, and the rim records the final conditions before peak metamorphism. Microchemical analysis of Almandine crystal profiles is a standard tool in metamorphic research for reconstructing the pressure-temperature-time paths of ancient mountain belts. Almandine also occurs in granitic pegmatites, where it crystallises from the residual magma as temperatures fall during the late stages of granite consolidation. Pegmatite Almandine tends to form larger, better-developed crystals than metamorphic material, and some of the finest gem-quality Almandine specimens come from pegmatite localities. In alluvial deposits, the hardness of 7 to 7.5 and the chemical stability of Almandine allow it to survive the physical and chemical processes of erosion and transport, concentrating in stream sediments and beach sands where it is recovered as a placer mineral. Garnet sands from beach and river deposits are mined commercially in several countries as an abrasive material. Major sources of gem and collector quality Almandine include India, Sri Lanka, Brazil, Madagascar, the United States particularly in New York State and Idaho, Austria, and various localities across Africa. The Tyrol region of Austria has historically produced some of the finest Almandine specimens known, and Austrian Almandine set in silver was among the most fashionable jewellery in nineteenth century Europe. Key Physical Properties Property Detail Mineral Group Silicate, Garnet Group Category Nesosilicate Crystal System Isometric (Cubic) Hardness 7 to 7.5 Mohs Specific Gravity 3.95 to 4.30 Refractive Index 1.770 to 1.820 Birefringence None Pleochroism None Lustre Vitreous to resinous Fracture Subconchoidal to uneven Cleavage None Tenacity Brittle Colour Deep red, reddish-brown, brownish-red Streak White Formula Fe₃Al₂(SiO₄)₃ Safe to Cleanse in Water Yes The absence of birefringence and pleochroism is a direct consequence of the isometric crystal system: cubic minerals are optically isotropic. The specific gravity of 3.95 to 4.30 is notably high for a silicate mineral, reflecting the density of the iron-rich garnet structure, and the heft of Almandine specimens is immediately perceptible when handling. The refractive index of 1.770 to 1.820 is high compared to most common gemstones, contributing to the bright, slightly adamantine quality of the lustre in well-cut faceted material. The Colour of Almandine: Iron in the Garnet Structure The deep red of Almandine is produced by iron in the Fe²⁺ oxidation state occupying the dodecahedral X sites of the garnet crystal structure. These sites are surrounded by eight oxygen atoms in a distorted cubic arrangement, and the specific geometry of this oxygen coordination environment determines how the Fe²⁺ electronic configuration interacts with visible light. Iron in the Fe²⁺ state in the Almandine dodecahedral site absorbs strongly in the green and yellow-green parts of the visible spectrum, leaving red and some violet wavelengths to dominate. This produces the characteristic deep red that is darker and more brownish-red than the cleaner, more vivid reds of Pyrope Garnet or Ruby, reflecting the specific crystal field environment of the large dodecahedral site compared to the smaller octahedral environments of those minerals. The same element, iron, is responsible for the red of Hematite, the orange of Carnelian, and the warm tones of Red Jasper, but the specific oxidation state and crystal site geometry in each mineral produces a distinctly different colour result. The brownish component in many Almandine specimens reflects the presence of some Fe³⁺ alongside Fe²⁺, or the contribution of manganese, which shifts the absorption toward more orange-brown tones. The finest gem-quality Almandine shows the purest, most saturated red with minimal brownish modifier, which is achieved where iron is predominantly in the Fe²⁺ state and manganese content is low. Almandine and Garnet Solid Solutions Pure end-member Almandine, Fe₃Al₂(SiO₄)₃ with no other garnet components, is relatively uncommon in nature. Most natural garnets are solid solutions, meaning they contain contributions from multiple garnet end members in varying proportions. Understanding the principal solid solutions involving Almandine helps explain the range of colours and properties seen in garnets broadly described as red. The Pyrope-Almandine series is the most geologically and commercially significant. Pyrope is the magnesium aluminium garnet Mg₃Al₂(SiO₄)₃, typically deep red to slightly purplish red, and it forms a complete solid solution with Almandine. Most red garnets in jewellery are Pyrope-Almandine solid solutions with compositions somewhere between the two end members. The Rhodolite variety, with its characteristic purplish-pink red, is a Pyrope-Almandine solid solution with roughly two parts Pyrope to one part Almandine, and is among the most valued red garnet varieties in the gem trade. The Almandine-Spessartine series involves manganese-bearing Spessartine, Mn₃Al₂(SiO₄)₃, which produces orange to reddish-orange tones. Garnets with significant both Almandine and Spessartine components produce the orange-red to brownish-orange colours seen in some commercial garnets from Africa and Brazil. The Almandine-Grossular series is less common but produces some interesting intermediate compositions, including the Hessonite variety of Grossular which can overlap in colour with Almandine at the orange-brown end of its range. Almandine in Human History Almandine has been used as a gemstone for at least four thousand years and occupies a significant place in the decorative arts of multiple ancient civilisations. In the Migration Period of European history, roughly the fourth through seventh centuries CE, Almandine Garnet cloisonné work represented one of the highest artistic achievements of the Germanic and Frankish peoples. Objects such as the Sutton Hoo shoulder clasps from Anglo-Saxon England, the gold and garnet buckles and sword fittings recovered from Frankish graves across France and Germany, and the jewellery of the Visigoths in Spain all used thin slices of Almandine Garnet set in gold cloisons to create brilliantly coloured objects of extraordinary technical sophistication. The Almandine in these objects was sourced from mines in India and Sri Lanka, demonstrating the long-distance trade networks that operated across Eurasia even in the early medieval period. In ancient Rome, Almandine was among the carbunculi, red gemstones, most prized in jewellery and seal cutting. In medieval Europe it appeared consistently in royal regalia and ecclesiastical objects, and the association of red garnets with blood, life force, and protective power appears across many cultural traditions independently. The nineteenth century saw a fashion for Bohemian garnet jewellery, using small, densely set Almandine and Pyrope-Almandine garnets from deposits in the Bohemia region of the Czech Republic, that produced a distinctive style of red garnet jewellery that remains widely collected as a historical artefact. Almandine as an Industrial Mineral Beyond its role as a gemstone and collector mineral, Almandine Garnet has significant industrial applications that are worth noting for context. Garnet abrasive, produced primarily from Almandine-rich sand and gravel from alluvial and beach deposits in India, Australia, and the United States, is widely used in abrasive blasting, waterjet cutting, and the manufacture of sandpaper and abrasive coatings. The hardness of 7 to 7.5, combined with the tendency of Almandine to fracture into sharp-edged particles rather than rounding off during use, makes garnet an effective and relatively environmentally benign abrasive compared to silica sand. Global garnet abrasive production runs to several hundred thousand tonnes annually, far exceeding the quantity used in gem and collector markets. Care and Handling Almandine Garnet is one of the more robust gemstones available for collection and jewellery use. Its hardness of 7 to 7.5 provides good resistance to everyday scratching, and the absence of cleavage means it does not split preferentially under impact. It is safe to cleanse in water and stable under normal handling conditions. Clean with mild soapy water, rinse thoroughly, and dry completely. Ultrasonic cleaning is generally safe for clean, inclusion-free material but should be avoided for heavily included specimens. Avoid sustained strong heat, which can affect the iron oxidation state in some specimens and potentially alter the colour over very long periods under extreme conditions, though this is not a practical concern under normal display and wearing conditions. Traditional Associations While this guide focuses on the mineralogy and science of Almandine Garnet, it carries a rich history of use in protective and energising traditions across many cultures, associated with strength, vitality, courage, and grounding. In chakra work it is most commonly associated with the Root Chakra. These associations are rooted in deep cultural tradition rather than scientific properties. Summary Almandine is the most abundant garnet species, an iron aluminium nesosilicate whose deep red coloration arises from Fe²⁺ in the dodecahedral sites of the cubic garnet structure, and whose metamorphic occurrence makes it one of the most geologically significant index minerals in the study of regional metamorphism. From Migration Period cloisonné masterpieces to modern abrasive blasting media, from the alluvial gem gravels of Sri Lanka to the metamorphic schists of the Alps, Almandine has been a constant presence in both human material culture and geological science for thousands of years. It is the garnet most people picture when they hear the word, and it rewards understanding as deeply as any more celebrated gemstone. Browse our full Almandine Garnet collection to find rough crystals, faceted stones, and matrix specimens. As always, our inbox and DMs are open if you would like guidance or simply wish to explore further. Contact us Love, Laura Further Reading Hematite: Looks Silver, Bleeds Red, Built Civilisation Carnelian: The Ancient World's Favourite Orange Gemstone Red Jasper: Mineral Profile and Geological Overview Fancy Jasper: When Geology Cannot Make Up Its Mind Amber: How a Sticky Resin Became a 50 Million Year Old Time Capsule

on Feb 17 2025

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Tanzanite: The Gemstone Discovered in 1967 That May Run Out Within Your Lifetime

What is Tanzanite? Mineral Group: Silicate | Category: Sorosilicate | Formula: Ca₂Al₃(SiO₄)₃(OH) | Hardness: 6.5 – 7 (Mohs) Tanzanite is a blue to violet-blue gemstone variety of the mineral Zoisite, a calcium aluminium sorosilicate. It is distinguished from other Zoisite varieties by its exceptional pleochroism, its vanadium-driven coloration, and above all by the extraordinary restriction of its geological occurrence: every Tanzanite in existence originated from a single mining area measuring only a few square kilometres in the Merelani Hills of northern Tanzania. No other commercially significant gemstone is sourced from so limited a geographical area. Zoisite itself was first described in 1805 and occurs in a range of colours and habits across many geological settings worldwide. For over 160 years it was known primarily as a grey, green, or pink mineral of moderate scientific interest. That changed in 1967 when gem-quality blue-violet crystals were discovered in Tanzania by Maasai tribesmen and subsequently brought to the attention of the gemological community. The mineral was named Tanzanite after its country of origin by Tiffany and Company, who recognised its commercial potential and introduced it to the international gem market. It has since become one of the most significant gemstone discoveries of the twentieth century. Formation and Geological Context Tanzanite forms under high-grade metamorphic conditions within the Mozambique Belt, an ancient zone of intensely deformed and metamorphosed rock that extends through much of East Africa and represents the collision zone of ancient continental masses during the assembly of the supercontinent Gondwana roughly 550 million years ago. The specific conditions within the Merelani Hills, in the foothills of the Lelatema Mountains near Mount Kilimanjaro, produced a localised geological environment unlike anywhere else on Earth for Tanzanite formation. The formation process requires calcium-rich rocks (in this case primarily graphitic gneisses and calc-silicate rocks) to be subjected to intense heat and pressure during regional metamorphism. Hydrothermal fluids circulating through the metamorphic sequence introduce and redistribute trace elements, most critically vanadium, which substitutes into the Zoisite crystal structure and is directly responsible for the blue-violet coloration that distinguishes Tanzanite from other Zoisite varieties. Iron and other trace elements contribute to tonal variation between individual specimens. The geological window for Tanzanite formation was both precise and brief in geological terms. Geochronological studies suggest that the Tanzanite-bearing rocks experienced their peak metamorphic conditions over a relatively short interval, and the combination of the right host rock chemistry, the right trace element suite, and the right pressure and temperature conditions appears to have occurred only in this one location. Despite extensive geological exploration across the broader Mozambique Belt, no commercially significant secondary occurrence has ever been found. At current rates of extraction, geological estimates suggest the accessible Tanzanite deposit may be exhausted within the coming decades, making it among the few gemstone minerals with a foreseeable end to supply. Key Physical Properties Property Detail Mineral Group Silicate Category Sorosilicate Crystal System Orthorhombic Hardness 6.5 – 7 Mohs Specific Gravity 3.35 – 3.55 Refractive Index 1.691 – 1.700 Birefringence 0.008 – 0.013 Pleochroism Strong trichroic: blue, violet, red Lustre Vitreous Fracture Uneven to subconchoidal Cleavage Perfect in one direction Tenacity Brittle Colour Blue, violet-blue, purple-blue Formula Ca₂Al₃(SiO₄)₃(OH) Safe to Cleanse in Water Brief contact tolerated; prolonged exposure not recommended The specific gravity of 3.35 to 3.55 is relatively high for a silicate mineral and reflects the dense calcium and aluminium-rich composition of the Zoisite structure. The orthorhombic crystal system means Tanzanite crystals have three mutually perpendicular axes of different lengths, contributing to the directional variation in optical properties that produces the strong pleochroism for which the mineral is known. Colour, Vanadium, and the Science of Pleochroism The colour of Tanzanite is one of the most scientifically interesting aspects of the mineral, involving both trace element chemistry and the directional optical properties of the crystal structure. The primary cause of the blue-violet colour is vanadium in the V³⁺ oxidation state substituting for aluminium within the Zoisite lattice. Vanadium in this configuration absorbs strongly in the yellow-green part of the visible spectrum, producing the blue and violet tones the mineral is known for. The precise balance between blue and violet in any given specimen depends on the concentration of vanadium, the presence of other trace elements including iron and chromium, and the orientation of the crystal relative to the light source. Pleochroism, the property that causes the crystal to show different colours when viewed from different directions, arises from the anisotropic optical structure of Tanzanite. Because the mineral belongs to the orthorhombic crystal system, light travelling through the crystal along different crystallographic axes interacts with the electronic structure of the vanadium atoms in different ways, absorbing different wavelengths and producing different apparent colours. In Tanzanite this effect is trichroic rather than simply dichroic, meaning three distinct colours (typically blue, violet, and a reddish to brownish tone) are visible along the three principal optical axes. In practice, the reddish axis is usually oriented out of the stone during cutting, as cutters align the crystal to display the most desirable blue-violet combination face-up. This means the trichroism is rarely visible in finished gemstones but is readily apparent in rough crystals when rotated under directional light, making uncut Tanzanite specimens a more complete demonstration of the mineral's optical properties than faceted stones. Most natural Tanzanite is heat treated before cutting, a standard and accepted practice in the gem trade. Rough material often displays a brownish to reddish-brown colour due to the presence of iron-based colour components alongside the vanadium. Heating to around 600 degrees Celsius oxidises these iron components and removes the brown tones, leaving the pure blue-violet vanadium colour to dominate. The treatment is stable, undetectable by standard gemological testing, and universally acknowledged within the industry. Crystal Form and Twinning Tanzanite typically forms as prismatic crystals elongated along one axis, often with vertically striated faces and a roughly rectangular cross-section. Natural crystal faces are frequently incomplete or irregular, reflecting the geological stress and deformation experienced during and after metamorphic formation. Perfectly terminated, undamaged natural crystals are less common than partially formed or matrix-attached specimens. Surface striations running parallel to the length of the crystal are a common and diagnostically useful feature, reflecting the stacking of growth layers during crystal development. Internal colour zoning, visible as bands or patches of differing colour intensity within the crystal, records fluctuations in vanadium concentration or hydrothermal fluid chemistry during growth. Natural twin crystals, in which two individual crystals have grown simultaneously in direct contact following a specific crystallographic relationship, occur in Tanzanite and are considered notable collector specimens. Twinning in Zoisite group minerals follows defined twin laws determined by the symmetry of the orthorhombic crystal system, producing characteristic contact or penetration twin forms that are immediately distinguishable from single crystals. Tanzanite Within the Zoisite Group Understanding Tanzanite requires understanding its relationship to the broader Zoisite mineral species, of which it is one of several distinct varieties. Zoisite is a calcium aluminium sorosilicate, meaning its silicon tetrahedra occur in pairs sharing one oxygen atom, a structural arrangement that distinguishes sorosilicates from the single tetrahedra of nesosilicates like Garnets or the chains of inosilicates like Pyroxenes. The Zoisite structure accommodates a range of trace element substitutions that produce visually and optically distinct varieties from the same underlying chemistry. Thulite is a pink to rose-red Zoisite variety coloured by manganese, found in Norway and several other localities and used as a decorative stone. Ruby Zoisite, also known as Anyolite, is a naturally occurring intergrowth of green Zoisite matrix with opaque Ruby crystals, found in Tanzania and Kenya and used extensively in ornamental carving. Clinozoisite is a closely related monoclinic polymorph of Zoisite with a similar composition but different crystal system. Each of these varieties illustrates how significantly the visual character of a mineral can change through trace element substitution while the fundamental crystal chemistry remains essentially constant. Shop all Zoisite | Explore all Zoisite mineral guides Rarity, Supply, and the Single Source Question The single-source geology of Tanzanite has significant implications that extend beyond mineralogy into economics, ethics, and conservation. Because the entire global supply comes from one small area of northern Tanzania, the Tanzanian government has significant leverage over the international gem market and has at various points restricted exports, required beneficiation within Tanzania, and sought to increase the proportion of value added locally before export. The Tanzanian mining sector around Merelani is divided into blocks with different ownership structures, ranging from large commercial mining operations to small-scale artisanal miners. The working conditions and environmental impacts of Tanzanite mining have been subjects of ongoing scrutiny, and conscious and ethical sourcing of Tanzanite is a more complex proposition than for many other gemstones precisely because of the concentrated geography and the mix of formal and informal mining that characterises the deposit. For collectors and buyers, the single-source origin also means that provenance is in principle verifiable in a way that is impossible for gemstones sourced from multiple countries. A Tanzanite can only come from Tanzania. Whether it came from a responsibly operated mine within that area is a separate and more difficult question. Care and Handling Tanzanite's hardness of 6.5 to 7 places it in a moderate range adequate for careful use in jewellery, but its perfect cleavage in one direction and brittle tenacity require more care than the hardness figure alone suggests. A sharp impact aligned with the cleavage plane can split a Tanzanite crystal or stone cleanly regardless of its hardness. Avoid knocks, store separately from harder minerals, and do not subject set stones to ultrasonic cleaning, which can propagate vibration along cleavage planes. Brief contact with water is generally acceptable for both rough specimens and finished stones. Prolonged soaking is not recommended, as sustained moisture exposure can affect surface lustre over time. Clean with a soft dry cloth or lightly damp cloth and dry immediately. Avoid steam cleaning and harsh chemical cleaners. The heat treatment applied to most commercial Tanzanite is stable under normal conditions and does not require any special precautions. Temperatures above several hundred degrees Celsius should obviously be avoided, but this is true of virtually all gemstone minerals. Traditional Associations While this guide focuses on the mineralogy and science of Tanzanite, it is valued in spiritual and mindful practices for its associations with transformation, higher consciousness, and intuition, associations that reflect its relatively recent discovery and its striking visual properties. These associations are rooted in cultural and traditional use rather than scientific properties. For a full exploration of how to work with Tanzanite spiritually, see our dedicated spiritual guide. Summary Tanzanite is a vanadium-coloured variety of Zoisite formed under precise metamorphic conditions in a single location on Earth, making it one of the rarest gemstone minerals by geological definition. Its strong trichroism (the interplay of blue, violet, and red that shifts with viewing angle and light source) makes it one of the most optically complex gemstones available, while its restricted supply and the foreseeable exhaustion of the known deposit give it a geological significance that extends beyond aesthetics. Whether encountered as a rough prismatic crystal showing its full trichroic range or as a finished stone displaying its signature blue-violet, Tanzanite is a mineral that rewards understanding as much as admiration. Shop all Tanzanite As always, our inbox and DMs are open if you would like guidance or simply wish to explore further. Contact us Love, Laura Further Reading Zoisite Family: All Mineral Guides How to Work with Tanzanite How to Work With Thulite Sugilite: Discovered in 1944, Forgotten for 30 Years, and Now One of the Most Sought After Minerals on Earth Charoite: The Purple Mineral That Exists Nowhere Else on Earth Blue Kyanite: One Mineral, Two Hardnesses, and a Billion Year Story Seraphinite: Mineral Profile, Formation and Chatoyant Structure Zeolite: Not One Mineral but a Family, and Why That Makes It Even More Interesting

on Feb 02 2026

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