Gemstone Guide

Kunzite: The Pink-Lilac Gem Named After Tiffany's Gemologist
Kunzite: The Pink-Lilac Gem Named After Tiffany's Gemologist
Kunzite is a pink to lilac gem variety of the mineral spodumene. It was first identified in 1902 from material found in the Pala district of San Diego County, California,... Read more...
Paraiba Tourmaline: What the Name Really Means
Paraiba Tourmaline: What the Name Really Means
What genuine Paraiba tourmaline actually is, and what "Paraiba colour" means when a listing uses that term honestly. Read more...
Rubellite: The Pink Tourmaline That Rivals Ruby
Rubellite: The Pink Tourmaline That Rivals Ruby
Why rubellite is called the tourmaline that rivals ruby, what causes its colour, and where our rubellite specimens come from. Read more...
Rainbow Tourmaline: Multi-Coloured Crystals from Afghanistan
Rainbow Tourmaline: Multi-Coloured Crystals from Afghanistan
What makes rainbow tourmaline different from bi-colour and tri-colour material, and why Afghanistan is a leading source. Read more...
Tri-Colour Tourmaline: Three Colours, One Crystal
Tri-Colour Tourmaline: Three Colours, One Crystal
Why some tourmaline crystals show three distinct colour zones, and why this variety is rarer than simple bi-colour material. Read more...
Indicolite: The Rare Blue Tourmaline
Indicolite: The Rare Blue Tourmaline
Why blue tourmaline is rarer than pink or green, what causes the colour, and where the finest indicolite comes from. Read more...
Bi-Colour Tourmaline: When One Crystal Grows Two Colours
Bi-Colour Tourmaline: When One Crystal Grows Two Colours
How and why a single tourmaline crystal grows two distinct colours, and why Afghanistan produces some of the finest bi-colour material found anywhere. Read more...
Tourmaline 101: The Gemstone With More Colours Than Any Other
Tourmaline 101: The Gemstone With More Colours Than Any Other
An introduction to the tourmaline group: why it comes in so many colours, how it forms, and where the finest specimens are found. Read more...
Watermelon Tourmaline: The Story Behind Nature's Most Colourful Crystal
Watermelon Tourmaline: The Story Behind Nature's Most Colourful Crystal
Discover why watermelon tourmaline shows a pink core and green rind, where it's found, and how to tell genuine natural specimens from treated stones. Read more...