Gemstone Encyclopedia

What Is Ametrine? Meaning, Natural Color Zones, Origin & Value Guide

Ametrine stands apart in the gemstone world as one of nature's most distinctive creations. Unlike gems that display a single color, ametrine naturally combines two: the purple of amethyst and the g...

Amethyst: The Gem of Royalty, Mysticism, and Spiritual Harmony

For most of history amethyst sat beside ruby and emerald, until one Brazilian discovery changed everything. The stone never changed; only its scarcity did. Its full story, from chemistry to lore.

Citrine: The Sunstone of Prosperity and Joy

Citrine is the golden variety of quartz, and most of it began life as amethyst before heating turned it yellow. Learn how the transformation works, how natural and heated stones differ, which shade...

Quartz: The Gem Family Behind a Dozen Famous Stones

Most people already own quartz without knowing it; one vibrates in every quartz watch. How a single mineral becomes amethyst, citrine, agate and a dozen other gems.

Green Quartz

Quartz is ancient, but its green is usually younger than the person wearing it. What prasiolite is, why green amethyst is the wrong name, and how to buy it honestly.

Cat's Eye Citrine: A Gemstone of Golden Beauty

Cat's Eye Citrine is a captivating gemstone known for its unique chatoyancy, a phenomenon created by fibrous mineral inclusions within the stone. When cut in a cabochon shape, these parallel fibers...