Ruby Collections

Demantoid

The Green Fire Garnet
Demantoid is the rarest and most valuable variety of garnet, famed for its vivid green color and diamond-like fire. Russian stones with ‘horsetail’ inclusions are especially coveted.
Coveted for unmatched brilliance and rarity.
All the information you need about Demantoid is below.
Ready to turn your vision into a one-of-a-kind piece?
We craft heirlooms—rings, necklaces, and more—just for you.
Start Your Custom Demantoid

Demantoid: History & Origin

“Demantoid’s green fire and horsetail inclusions are legendary among connoisseurs.”

Discovered in Russia’s Ural Mountains in the 19th century, demantoid became a prized gem among Russian royalty and European aristocrats. It is also found in Namibia and Madagascar, but Russian demantoid with fine color and classic inclusions remains the gold standard.

Demantoid: Heritage, Qualities & Market Value

Top demantoid is one of the world’s rarest gems, valued for its vivid color, clarity, and dazzling fire. Russian stones above 1 carat with horsetail inclusions are exceptional collector pieces. Stones under 1 carat are most common; larger gems are extremely rare and expensive.

  • Hardness: 6.5–7 on the Mohs scale.
  • Clarity: Russian stones prized even with “horsetail” inclusions.
  • Cut: Faceted to enhance fire; round and oval cuts most common.
  • Market: Most valuable garnet type; Russian origin most prized.
  • Imitations: Rare, but some green garnet simulants exist.

Demantoid in Culture & Lore

Imperial Gem

A favorite of Russian Tsars and European royalty.

Collector’s Jewel

Highly valued for rarity and unique inclusions.

Symbol of Vitality

Believed to bring energy, growth, and prosperity.

Frequently Asked Questions

They are unique to Russian demantoid and a sign of natural origin, making gems more collectible.

Yes, but care should be taken as it is softer than some other garnets.
Speak to a Gemologist

Book a private viewing or ask us about provenance, care, and investment in rare gemstones, cherished by tradition for generations.