Girasol
Ethiopia
6.28 carats
© Kosnar Gem Co.
Girasol 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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Girasol Gemstones by Size
This table shows distribution of Girasol 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:6.28 cts
Heaviest:6.80 cts
Average:6.54 cts
Total photos:2
Do you have a larger Girasol? Why not upload a photo?
| General Information | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| A variety or type of: | Common Opal, which is a variety of Opal | |||||||||
| Chemical Formula |
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| Physical Properties of Girasol | ||||||||||
| Mohs Hardness | 5.5 to 6.5, Gemstones of the world (2001) | |||||||||
| Specific Gravity | 1.98 to 2.50, Gemstones of the world (2001) | |||||||||
| Tenacity | Brittle, Gemstones of the world (2001) | |||||||||
| Cleavage Quality | None, Gemstones of the world (2001) | |||||||||
| Fracture | Conchoidal,Splintery, Gemstones of the world (2001) | |||||||||
| Optical Properties of Girasol | ||||||||||
| Refractive Index | 1.37 to 1.52, Gemstones of the world (2001) | |||||||||
| Birefringence | None, Gemstones of the world (2001) | |||||||||
| Pleochroism | Absent, Gemstones of the world (2001) | |||||||||
| Dispersion | None, Gemstones of the world (2001) | |||||||||
| Colour | ||||||||||
| Colour (General) | Almost colourless with bluish opalescence, Gemstones of the world (2001) | |||||||||
| Transparency | Transparent,Translucent, Gemstones of the world (2001) | |||||||||
| Crystallography of Girasol | ||||||||||
| Crystal System | Amorphous, Gemstones of the world (2001) | |||||||||
| Further Information | ||||||||||
| Mineral information: | Girasol information at mindat.org | |||||||||