-40%
1.8 Ct All Natural Yellowish Brown Titanite Sphene Round Cut Gemstone
$ 15.83
- Description
- Size Guide
Description
1.8 Ct All Natural Yellowish Brown Titanite Sphene Round Cut GemstoneDimensions: 7.0 mm x 6.5 mm x 5.0 mm
You will receive the exact gemstone photographed above ^
Item # 1686
FYI:
Titanite, or sphene (from the Greek sphenos (σφηνώ), meaning wedge, is a calcium titanium nesosilicate mineral, CaTiSiO5. Trace impurities of iron and aluminium are typically present. Also commonly present are rare earth metals including cerium and yttrium; calcium may be partly replaced by thorium.
The International Mineralogical Association Commission on New Minerals and Mineral Names (CNMMN) adopted the name titanite and "discredited" the name sphene as of 1982.
Titanite, which is named for its titanium content, occurs as translucent to transparent, reddish brown, gray, yellow, green, or red monoclinic crystals. These crystals are typically sphenoid in habit and are often twinned. Possessing a subadamantine tending to slightly resinous luster, titanite has a hardness of 5.5 and a weak cleavage. Its specific gravity varies between 3.52 and 3.54.