Andesine
Tibet, China
2.48 carats
© Mineral Classics
Andesine was first described in 1841 for an occurrence in the Marmato mine, Colombia. It is named after the Andes mountains of South America.
Andesine 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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Andesine Gemstones by Size
This table shows distribution of Andesine 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:1.01 cts
Heaviest:3.03 cts
Average:1.98 cts
Total photos:6
Do you have a larger Andesine? Why not upload a photo?
| General Information | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| A variety or type of: | Albite, which is a variety of Feldspar | |||||||||
| Chemical Formula |
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| Andesine Treatments | ||||||||||
| Red and green: immersion - green center with red outer section may suggest a potentially copper diffused stone - Blue Chart Gem Identification, Herve Nicolas Lazzarelli, 2010, p 9 | ||||||||||
| Physical Properties of Andesine | ||||||||||
| Mohs Hardness | 6 to 6.5, Blue Chart Gem Identification (2010) More from other references | |||||||||
| Specific Gravity | 2.65 to 2.69, Blue Chart Gem Identification (2010) More from other references | |||||||||
| Tenacity | Brittle, Gems, Sixth Edition (2006) | |||||||||
| Cleavage Quality | Perfect, Blue Chart Gem Identification (2010) More from other references | |||||||||
| Fracture | Uneven,Conchoidal, Gems, Sixth Edition (2006) | |||||||||
| Refractive Index | 1.543 to 1.564, Blue Chart Gem Identification (2010) More from other references | |||||||||
| Optical Character | Biaxial/+,-, Blue Chart Gem Identification (2010) More from other references | |||||||||
| Birefringence | 0.007 to 0.011, Blue Chart Gem Identification (2010) More from other references | |||||||||
| Dispersion | ||||||||||