Search: 26 results found for "ruby in zoisite"

Ruby in Zoisite Egg 4cm

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~~£12.00~~ £7.50

Ruby in Zoisite Tumblestones 20-30mm

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Ruby with Mica Specimen 24.5gr

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£125.00

Rough Ruby 7.65gr

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~~£27.00~~ £15.00

Ruby Cabochon 25gr

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~~£125.00~~ £75.00

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

Natural Hexagonal Rough Ruby 2cm, India

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£38.00

Tanzanite Gem 1.65gr, Tanzania Gem Tali & Loz Crystals

Tanzanite Gem | 1.65g | Tanzania

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£45.00

Description Cards P-R

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Raw Thulite 3cm, Sold as Seen

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Pisces Zodiac Crystal Set

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Thulite Palmstone 5.5cm | Sold As Seen

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Raw Thulite Freeform 6cm

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Capricorn Zodiac Crystal Set

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Rubellite Tourmaline in Quartz Matrix | 53mm | Brazil

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£65.00

Rhodochrosite Pendant 3.7cm 925 Silver Pendant With Chain Jewellery Tali & Loz Crystals

Rhodochrosite Pendant | 3.7cm | 925 Silver With Chain

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£85.00

Rhodochrosite Pendant | 3.7cm | 925 Silver With Chain

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£85.00

Rhodochrosite Pendant 3.6cm 925 Silver Pendant With Chain Jewellery Tali & Loz Crystals

Rhodochrosite Pendant | 3.6cm | 925 Silver With Chain

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£85.00

Rhodochrosite Pendant 5cm 925 Silver Pendant With Chain Jewellery Tali & Loz Crystals

Rhodochrosite Pendant | 5cm | 925 Silver With Chain

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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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Best Healing Crystals for Pisces - Crystals for Each Zodiac Sign

Pisces is the final astrological sign in the zodiac. Highly intuitive, sensitive and spiritual, Pisces combine the traits of the rest of the signs in a unique blend. They are also highly adaptable and kind individuals that know how to see things from different perspectives and offer a solid piece of advice. As dreamers and empaths, Pisces require a lot of time and space for relaxation, winding down and getting in touch with their creative side. We have put together the best crystals and healing stones for Pisces zodiac signs that will help you achieve balance in life and accomplish your dreams and goals. Characteristics of Pisces - Strengths and Weaknesses Date Duration: February 19th - March 20th Symbol: Fishes Element: Water Modality: Mutable Planetary Ruler: Neptune (Jupiter - ancient) The symbol for Pisces, two fish swimming in opposite directions, is a great visualization of the conflict between their two worlds and competing personality traits. Pisces move between fantasy and reality, sensitivity and cruelty, cautiousness and spontaneity. Many of those negative traits are due to Pisces highly empathetic side that can make it overwhelming to constantly tune in to what others need. This also means Pisces can turn to alcohol or drugs more than they should as a form of escapism from the burdens of the world and those around them. With Neptune as their ruling planet, Pisces exhibit an aptitude for psychic abilities and have the ability to connect to higher realms. As the God of the Seas, Neptune represents water, but also dreams, and the flow of imagination and ideas that push us forward. The influence of Neptune also manifests in the tendency to daydream and escape, especially when the problems of others start to weigh you down. As a mutable sign, individuals born under the Pisces zodiac sign can become emotional sponges for the ideas, mannerisms and feelings of those around them. Their adaptable and flexible nature is especially useful when dealing with important life changes. At the same time, Pisces tend to avoid conflict and rather than confronting an issue, will become passive-aggressive if they feel they are being unfairly criticized. Top Picks for Pisces Crystals Angel Aura Amethyst Fluorite What is the Pisces Birthstone? Amethyst is the traditional birthstone for February and a great choice for Pisces sun signs. This is a crystal that is linked to breaking free of addictions and changing toxic thought and behaviour patterns. Amethyst is also excellent at soothing the sensitive side of Pisces, calming the mind and spreading harmony and positive vibes to everyone that uses it. Another birthstone alternative for Pisces is Aquamarine. Best Healing Crystals for Pisces Ocean Jasper Similar to Pisces, Ocean Jasper has a contrasting nature. It is both a Water and Fire element stone, soft and powerful at the same time. Ocean Jasper vibrates strongly to the Solar Plexus Chakra, a place where your warrior energy is located. Pisces enjoy the process of self reflection and aligning with their purpose in life. This is a great crystal that will help you develop the confidence and willpower to follow your dreams. Blue Lace Agate As a Water element sign, Pisces indulge in daydreaming and thrive when they have space for their imagination and creativity to shine through. Blue Lace Agate is a February and March birthstone that is ruled by Neptune - just like Pisces - that is known as the Stone of Creativity. It helps the non-confrontational Pisces become more assertive in their beliefs while learning how to communicate and express their ideas and thoughts. Blue Lace Agate also symbolizes faith, patience, acceptance and sincerity. Mookaite An Earth element stone and powerful grounding crystal, Mookaite is relatively unknown outside of Australia where it was first discovered. It vibrates strongly to the Root Chakra, providing Pisces with the much-needed grounding-energy and helping them feel secure in their environment. Lemurian Lemurian is a great crystal for Pisces that can allow them to explore their psychic gifts. This crystal will add in astral travel, lucid dreaming and getting in touch with your spirit guides. Pisces often have a hard time separating fantasy from reality and working with this crystal can allow you to travel between the two realms smoothly. Lemurian is also a symbol of wisdom, knowledge and divine intuition. Iolite Iolite is also known as water Sapphire for its rich blue colour. As a Water element stone, Iolite helps Pisces develop their intuition and enhances communication and creative expression. This wonderful crystal vibrates to the Third Eye Chakra and is a perfect companion to meditation sessions. It can also help fight indecisiveness, inability to focus and self doubt. Green Fluorite Fluorite in general is known for its ability to promote mental clarity and boost creativity and self-expression. With its connection to the Heart Chakra, Green Fluorite provides healing and loving vibes that help you enter growth mode and put big plans into action. This stone is a force of inspiration and compassion. Ruby in Zoisite Ruby in Zoisite can give you the strength you need to tackle whatever you need to - it encourages vitality and patience. Due to their highly empathetic side, Pisceans often put the needs of others above their own. Ruby in Zoisite helps you set clear boundaries so you can be there for friends and loved ones without feeling overwhelmed. Strawberry Quartz Strawberry Quartz is a true protector of your energy and spiritual wellbeing. This is a great stone for Pisces when they feel lost, disillusioned and helpless. For Pisces, these feelings come up quite often due to their empathetic nature that makes it hard to take on the feelings of others. You can use Strawberry Quartz to stabilize and ground your energy and appease anxiety and stress during the day. A great crystal to keep on you at all times. Blue Tiger’s Eye Tiger’s Eye crystals are known for their strong protective qualities. In ancient years, they were often used to ward off evil and keep negative energy at bay. Blue Tiger’s Eye combines those qualities to offer clarity and empowerment and open the Heart Chakra to gratitude and appreciation. While most Pisceans are artistic souls that love to let their creative side shine through, the influence of ruler planet Neptune, can make it difficult to get their point across. Blue Tiger’s Eye vibrates to the Throat Chakra and will make it easier to speak honestly and authentically. Want a Pisces crystal set? Our carefully selected bundle of Scorpio crystals includes the combined benefits of Ocean Jasper, Blue Lace Agate, Amethyst, Mookaite, Blue Tigers Eye, Ruby in Zoisite and Strawberry Quartz. A loving and thoughtful gift idea for Pisces zodiac signs that will help you balance your emotions and find strength and support. Do you have any questions? Feel free to contact us for free crystal advice! Love & Light, Laura Related Blog Posts Want to learn more about how crystals can help you heal emotional or physical imbalances? Check out our other Guides: Best Crystals for Virgo Best Crystals for Gemini Best Crystals for Leo Best Crystals for Aquarius Best Crystals for Capricorn Best Crystals for Scorpio Best Crystals for Sagittarius Best Crystals for Libra Best Crystals for Cancer Zodiac Best Crystals per Zodiac sign 101 Crystal Healing Guide 101

on Nov 10 2021

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