Andesine
China
2.05 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 is found in a range of colours, from red, honey-red to orange, yellow, champagne and green.
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:0.41 cts
Heaviest:10.58 cts
Average:2.81 cts
Total photos:25
Do you have a larger Andesine? Why not upload a photo?
| General Information | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| A variety or type 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 | |||||||||
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