Antigorite
China
6.76 carats
© Rarestone.com
Antigorite is a hard compact type of Serpentine. It occurs in tough pleated masses. The material is usually dark green in colour, but may also be yellowish, gray, brown or black.
Antigorite Gemstones by Colour
This table shows the variety of hues this gemstone can be found in. Click on a photo for more information.
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Antigorite Gemstones by Size
This table shows distribution of Antigorite gemstone sizes that are listed on this site. This can give a good indication as to the general availability of this gemstone in different sizes.
Contributed photos
Lightest:4.37 cts
Heaviest:6.76 cts
Average:5.57 cts
Total photos:2
Do you have a larger Antigorite? Why not upload a photo?
| General Information | ||||||||||||||||||||||
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| A variety or type of: | Serpentine | |||||||||||||||||||||
| Varieties/Types: | Bowenite - Apple-green variety of Antigorite. Williamsite - Oil-green variety of Antigorite. | |||||||||||||||||||||
| Chemical Formula |
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| Physical Properties of Antigorite | ||||||||||||||||||||||
| Mohs Hardness | 5 to 5.5, Blue Chart Gem Identification (2010) More from other references | |||||||||||||||||||||
| Specific Gravity | 2.58 to 2.80, Blue Chart Gem Identification (2010) More from other references | |||||||||||||||||||||
| Cleavage Quality | Perfect, Handbook of mineralogy (2001) | |||||||||||||||||||||
| Fracture | Conchoidal,Splintery, Handbook of mineralogy (2001) | |||||||||||||||||||||
| Optical Properties of Antigorite | ||||||||||||||||||||||
| Refractive Index | 1.530 to 1.575, Blue Chart Gem Identification (2010) | |||||||||||||||||||||
| Optical Character | Biaxial/-, Handbook of mineralogy (2001) | |||||||||||||||||||||
| Colour | ||||||||||||||||||||||
| Colour (General) | Green, blue-green, white; colorless to pale green in thin section., Handbook of mineralogy (2001) | |||||||||||||||||||||
| Transparency | Translucent,Opaque, Handbook of mineralogy (2001) | |||||||||||||||||||||
| Lustre | Waxy,Silky,Resinous,Greasy,Dull (Earthy), Handbook of mineralogy (2001) | |||||||||||||||||||||
| Crystallography of Antigorite | ||||||||||||||||||||||
| Crystal System | Monoclinic, Blue Chart Gem Identification (2010) | |||||||||||||||||||||
| Habit | Minute crystals, typically platy, rarely elongated; some plates have rectangular outline due to cleavage; commonly bladed or fibrous., Handbook of mineralogy (2001) | |||||||||||||||||||||
| Geological Environment | ||||||||||||||||||||||
| Where found: | Commonly replaces ultramafic rocks, pervasively or in crosscutting veinlets. As a replacement of siliceous dolostone along contacts with diabase sills, Handbook of mineralogy (2001) | |||||||||||||||||||||
| Further Information | ||||||||||||||||||||||
| Mineral information: | Antigorite information at mindat.org | |||||||||||||||||||||