Gemstone Encyclopedia

Top 10 Rare Gemstones Every Collector Should Know

The rarest stone on this list was discovered already cut, in a jeweler's tray. Ten rare gemstones, organized by the mechanism behind each one's scarcity.

Paraíba Tourmaline: The Ultimate Guide to the World's most coveted Neon Gemstone

Paraíba tourmaline is celebrated for its vivid neon blue glow and extreme rarity, making it one of the most desirable colored gemstones of the modern era. With strong long-term price appreciation a...

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...

Tsavorite Garnet: The Ultimate Guide to the Rarest Green Gemstone (2026)

Discovered in 1967 and named by Tiffany, tsavorite is the youngest of the great green gemstones. This guide covers its geology, rarity, emerald comparison and buying advice.

Alexandrite: The Magical Chameleon of Gemstones

Alexandrite is one of the rarest gemstones in the world. Its magical color shift and rich history make it one of the most sought-after collector’s gems.

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.

Apatite: The Vibrant Gemstone of Energy and Creativity

Named from the Greek word for "deception," apatite convincingly imitates gems far more valuable than itself, offering neon-blue brilliance at a fraction of their price. Learn what apatite is, why i...

Aquamarine: The Gem of Ocean Depths and Serenity

Aquamarine is the blue variety of beryl, emerald's sibling, colored by iron and prized for clarity that other gems can only envy. Learn why most stones on the market are heated, what the Santa Mari...

Beryl: The Royal Gemstone of Many Colors

Beryl is the mineral family behind emerald, aquamarine, morganite, heliodor, goshenite and the extremely rare red beryl. Learn how trace elements create each color, why clarity standards differ bet...

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...

Emerald: The Royal Gemstone's Mysteries, History, and Investment Power

Emerald is the green aristocrat of the beryl family, colored by chromium and read by origin at a glance. Learn why Colombian stones glow warmer than all others, how the trade grades oil treatment, ...

Garnet: The Gemstone of Passion, Strength, and Royalty

Garnet is a family of minerals rather than a single gem, spanning Bohemian red pyrope, fiery spessartine, emerald-rivaling tsavorite, and rare blue color-change stones from Madagascar. Learn the sp...