The Crystal and Mineral Vault


Welcome to our Crystal and Mineral Knowledge Hub, where science tradition and mindful practice come together. This space is dedicated to exploring the formation properties and cultural associations of crystals and minerals through Mineral Vault profiles and practical guides designed to encourage informed discovery and deeper understanding.

Go to our Mineral Guides for science based knowledge and the 'How to Guides' for spiritual practices.

Fluorescent Ruby

The Crystal and Mineral Vault

A Beginner's Guide to Mineral Optical Properties

by Laura Konst
Every mineral guide in the Mineral Vault references optical properties; colour, lustre, refractive index, birefringence, pleochroism, fluorescence, dispersion, chatoyancy, and asterism, but what do those terms actually mean? This second guide in our Mineralogy series explains each optical property clearly and practically, covering how light interacts with crystal structure to produce everything from the fire in a diamond to the cat’s eye in Tiger’s Eye. Whether you are just starting your collection or want to understand what you are already looking at, this is the place to begin.
Australian Gypsum specimen

The Crystal and Mineral Vault

A Beginner's Guide to Mineral Physical Properties: Hardness, Cleavage, Crystal Systems and More

by Laura Konst
Every mineral guide on the Mineral Vault references hardness, cleavage, fracture, tenacity, crystal system, and streak, but what do those terms actually mean? This first guide in our Mineralogy series explains each physical property clearly and practically, with no specialist equipment required. Whether you are just starting your collection or want to understand what you are already holding, this is the place to begin.
Tanzanite Crystal

The Crystal and Mineral Vault

Understanding Pleochroism: How Crystal Structure Creates Colour Change in Gemstones

by Laura Konst
Some gemstones look different every time you move them. That is not an accident or a trick of the light: it is pleochroism, a genuine optical property built into the crystal structure itself, causing different colours to be absorbed and reflected depending on the direction light travels through the stone. This guide explains what pleochroism is, why it only occurs in certain minerals, the difference between dichroism and trichroism, and why it matters for collectors, gem cutters, and anyone who wants to understand what they are looking at when a gemstone changes before their eyes.
Large Malachite Statement piece with stalactites

The Crystal and Mineral Vault

Malachite: From Ancient Egyptian Cosmetics to the Winter Palace

by Laura Konst
Malachite is a copper carbonate mineral whose vivid banded greens have made it one of the most recognisable and historically significant minerals in the world. From ancient Egyptian eye makeup to the Malachite Room of the Winter Palace in Saint Petersburg, its colour has shaped human culture for over six thousand years. This guide explores its formation, its relationship with Azurite, the chemistry behind its banding, and everything you need to know to care for it in a collection.
Green tourmaline in Smokey quartz

The Crystal and Mineral Vault

Understanding Green Tourmaline | Mineral Guide

by Laura Konst
Green Tourmaline is one of the most recognised varieties within the Tourmaline group, known for its rich green tones and well formed crystal structure. This guide explores how it forms, what gives it its colour and how to identify its key mineral features.
Permineralised Wood

The Crystal and Mineral Vault

Permineralized Wood: The Fossil That Still Looks Like a Tree

by Laura Konst
Permineralized Wood begins as a living tree and ends as stone. Through a gradual process of mineral infilling unfolding across hundreds of millions of years, the cellular structure of ancient wood is preserved in extraordinary detail, capturing growth rings, grain patterns, and tissue anatomy that would otherwise have decayed without trace. Every specimen is a fragment of a forest that no longer exists.
Hematite Crystal

The Crystal and Mineral Vault

Hematite Mineral Guide

by Laura Konst
Hematite is a dense iron oxide mineral recognised for its metallic sheen, red brown streak and strong geological importance. Formed through sedimentary and hydrothermal processes, it has played a key role in Earth’s mineral history while remaining a popular specimen for collectors and those drawn to its grounding qualities.
Fancy Jasper Crystal

The Crystal and Mineral Vault

Fancy Jasper Mineral Guide: Meaning, Formation, Properties and Care

by Laura Konst
Fancy Jasper is a multi coloured variety of Jasper valued for its grounding qualities and distinctive landscape like patterns. Formed through silica rich mineral processes, each piece reflects natural variation created by mineral inclusions over time. This guide explores Fancy Jasper from a geological perspective before examining its historical significance, energetic associations and practical care.
Tanzanite Twinned Crystal

The Crystal and Mineral Vault

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

by Laura Konst
Tanzanite was unknown to science until 1967. Every specimen ever found has come from the same few square kilometres of northern Tanzania, and geological estimates suggest the accessible deposit may be exhausted within decades. This guide explores the metamorphic geology, vanadium-driven colour science, and remarkable trichroism of one of the rarest and most geographically restricted gemstones on Earth.
Seraphinte Specimen

The Crystal and Mineral Vault

Seraphinite: Mineral Profile, Formation and Chatoyant Structure

by Laura Konst
Seraphinite is a green variety of clinochlore within the chlorite group, recognised for its distinctive silvery white, feather like patterns and chatoyant effect. This Mineral Vault guide explores how Seraphinite forms through metamorphic processes, its physical and optical properties, and why it is valued within mineral collections.
Red Jasper Crystal

The Crystal and Mineral Vault

Red Jasper: Mineral Profile and Geological Overview

by Laura Konst
Red Jasper is an opaque variety of microcrystalline Quartz known for its iron rich colouration and dense structure. This Mineral Vault guide explores how Red Jasper forms, its physical and chemical properties, key global localities, and its long standing use within mineral collections and historical contexts.