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.

Yellow Calcite Rough Piece

The Crystal and Mineral Vault

Yellow Calcite: The Sunshine in a Family That Produces Every Colour in the Spectrum

by Laura Konst
Yellow Calcite is the same mineral as chalk, marble, and limestone: calcium carbonate, nothing more. What makes it yellow is a trace of iron incorporated during formation, the same element that colours Citrine yellow in Quartz and gives orange tones to many other minerals.