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Chondrodite, named for the Greek word for grain, "chondros," is a member of the humite group of minerals. Its gemmy hues range from red to yellow to orange, with the latter resembling the color of spessartite garnet. It can be found in several places including New York, Burma, Tanzania, and Afghanistan.

Chondrodite Polished
Chondrodite Classification
Common Name Chondrodite
Species Clinohumite
Chondrodite Optical Properties
Transparency Transparent - Opaque
Refractive Index 1.592-1.646
Birefringence 0.028-0.034
Optic Character Biaxial
Optic Sign Positive
Fluorescence SWUV: inert to yellow or brownish-orange
LWUV: inert to weak orange
Pleochroism Dichroic, moderate orange-brown and yellow-brown
Chondrodite Characteristic Physical Properties
Hardness 6-6.5
Streak Yellow To Brown
Specific Gravity 3.100-3.260 Typical:3.200
Toughness Poor
Luster Vitreous, Dull
Fracture Uneven
Cleavage None
Chondrodite Chemistry & Crystallography
Chemical Formula (Mg,Fe2+)5[F, OH)2/SiO4)2]
Crystal System Monoclinic

Chondrodite Colors

  • Brown Chondrodite Brown
  • Yellow Chondrodite Yellow
  • Red Chondrodite Red

Chondrodite Spectra

Chondrodite Spectra

Color due to iron. Very little transmission occurs below 580nm.

Jewelry Television acknowledges the significant scientific contributions of John S Harris, FGA to the study of gemstone spectra and with deep appreciation to him, acknowledges the use of his images and related notes about gemstones and their spectra in the educational materials on this website.

Countries of Origin

Tanzania, United Republic Of; French Polynesia

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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.