2.49 ct Oval Cut (12 x 7 mm) Turkish Color Change Diaspore Loose Gemstone

Description

2.49 ct Oval Cut (12 x 7 mm) Turkish Color Change Diaspore Natural Loose Gemstone
Color Change From Green to Purplish Red. Orgin From Turkey Mined From Earth
100% Natural Genuine & Mined from Earth Gemstone !!!
Gem Type
Diaspore
Color
Green
Shape
Oval
Size (LxWxD)
12.22 x 6.63 x 3.91 mm
Weight
2.49 ct
Grade
AAA+
Hardness
7.0
Luster
Excellent
Clarity
VVS-VS
Treatment
Unheated / Untreated
Origin
Turkey
RefractiveIndex
1.682 - 1.706
Specific Gravity
3.25
FL
IF
VVS1
VVS2
VS1
VS2
SI1
SI2
L1
L2
L3
L4
Flawless Internally
Flawless
Very Very Slightly
Imperfect
Very Slightly Imperfect
Slightly Imperfect
Imperfect
Opaque
Diaspore
Mohs Hardness - 7.0 - Found in - Turkey. Sometimes known in the trade as "Csarite" Diaspore is an aluminum oxide hydroxide mineral, crystallizing in the orthorhombic system and isomorphous with goethite. It occurs sometimes as flattened crystals, but usually as lamellar or scaly masses, the flattened surface being a direction of perfect cleavage on which the lustre is markedly pearly in character. It is colorless or greyish-white, yellowish, sometimes violet in color, and varies from translucent to transparent. It may be readily distinguished from other colorless transparent minerals with a perfect cleavage and pearly luster, like mica, talc, brucite, and gypsum by its greater hardness of 6.5 - 7. The specific gravity is 3.4. When heated before the blowpipe it decrepitates violently, breaking up into white pearly scales.
Track Page Views With
Auctiva's FREE Counter