Sillimanite
Unknown Owner
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Sillimanite is a high temperature and high pressure aluminum silicate found in high-grade regional metamorphic rocks. Transparent crystals are called "fibrolite" by gemologists. This is a gemmy, fine, lavender, elongate crystal with a bit of rounding. The edge rounding likely represents resorption into the matrix more than stream wear. This example from Mogok, Burma is sharper than most. 7.22 carats.
Product details
SpeciesSillimanite
SizeThumbnail
Dimensions1.8 x 0.9 x 0.4 cm
Added on10/23/2024
LocalityMyanmar, Mandalay Region, Mogok Valley
Known provenance
| Date | Collector | Acquisition price |
|---|---|---|
| 08/2024 | Unknown Owner | Not disclosed |
| — | The Arkenstone | Not disclosed |
Comments