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
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| General Information | ||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| A variety or type of: | Serpentine | |||||||||||||||||||||
| Varieties/Types: | Williamsite - A translucent pale apple-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 | |||||||||||||||||||||