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Edenite is named for Edenville, New York which is the first known location where it was described. Specimens can be green, gray, brown, and white and commonly forms as well-formed crystals.

Edenite Classification
Common Name Edenite
Species Amphibole
Edenite Optical Properties
Transparency Opaque-Translucent
Dispersion Strength: Weak Fire
Refractive Index 1.606-1.684
Birefringence 0.023- 0.025
Optic Character Biaxial
Optic Sign Positive
Polariscope Reaction Aggregate (AGG)
Fluorescence SWUV: Pale greenish blue
Pleochroism Unobservable, Depends on bodycolor: pale gray or colorless, greenish yellow, or pale green; pale brown, light green, green; colorless or pale bluish gray, light brownish green, greenish blue, or greenish
Edenite Characteristic Physical Properties
Hardness 5-6
Streak White
Toughness Poor
Luster Vitreous
Stability Brittle
Fracture Uneven
Cleavage Perfect
Edenite Chemistry & Crystallography
Chemical Name Sodium Calcium Magnesium Silicate
Chemical Formula NaCa2Mg5Si7O22(OH)2
Crystal System Monoclinic
Chemistry Classification Silicate

Edenite Colors

  • Yellow Edenite Yellow
  • White Edenite White
  • Green Edenite Green
  • Gray Edenite Gray
  • Brown Edenite Brown
  • Black Edenite Black

Countries of Origin

Myanmar; United Arab Emirates (the); Cameroon; Viet Nam; Czechia; Egypt; Madagascar; Portugal; Greece; Austria; Sweden; Mozambique; Korea (the Republic of); Mali; China; Saint Helena, Ascension and Tristan da Cunha; Russian Federation (the); Brazil; Poland; Iraq; Slovakia; Slovenia; Bulgaria; France; United Kingdom of Great Britain and Northern Ireland (the); United States of America (the); Sri Lanka; Japan; Saint Kitts And Nevis; Belarus; Saint Vincent And The Grenadines; Switzerland; Spain; New Zealand; Canada; Cuba; Saint Lucia; Norway; Namibia; Finland; Italy; Antarctica; Philippines (the); Australia; Ethiopia; Germany


Edenite is brittle so please take when handling specimens.

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Tim Matthews


Tim Matthews

Tim Matthews is President and Chief Executive Officer of Jewelry Television® (JTV), as well as a member of the company's Board of Directors. He oversees and leads all aspects of the company's powerful omni-digital retail platform that uniquely specializes in fine jewelry and gemstones. His passion for business and gemstones has led him to become a recognized expert in the field of gemology. He is a life member of the Gemmological Association of Great Britain (Gem-A) and has earned Gem-A's highest degrees, the Gemmology (FGA) and Diamond (DGA) diplomas. He is also a Graduate Gemologist (GG) of the Gemological Institute of America (GIA) and has also completed GIA's Graduate Diplomas in Diamonds, Colored Stones and Pearls. Under his leadership, JTV has become the leader in the sourcing and selling of color gemstones and jewelry.

This page was created on June 27, 2014.

This page was last edited on October 24, 2019.