This is an oval cabochon-cut, light-blue with natural patterning (patterns vary), Chinese Turquoise gemstone. It weighs 8.55cts and measures 18x13mm. Below is some technical information:
Size:
18x13 mm
Shape:
Oval Cabochon-Cut
Color:
Light-Blue with Patterning (Patterns Vary)
Clarity:
Opaque
Luster:
Good Polish with Fine Glow
Origin:
China
Hardness:
5 - 6
Specific Gravity:
2.70 - 2.90
Refractive Index:
1.50
Chemical Composition:
(Na, Ca)8Al6Si6O24(S,SO4), Sodium Calcium Aluminum Silicate Sulfur
Crystal Structure:
Isometric
CLICK HERE TO SEE ALL OUR OTHER JEWELLERY AND GEMSTONE AUCTIONS
Postal Zone | Standard Cost | Insurance (optional) |
UK and Northern Ireland | £1.50 | £0.75 (recorded delivery) |
Europe | £2.00 | £2.00 (Airmail - signed for) |
Rest of the World | £2.50 | £2.00 (Airmail - signed for) |