Sapphire

Description

The name refers to the variety of blue of varying intensity of corundum (aluminum oxide which crystallizes in the trigonal system)

General Physical Properties: - Hardness 9 - Density 4.00 g/cm³ - Refractive indexes approximately 1,760 and 1,769

- Weight 3, 20 Kt

- Size 9.00 x 7.05 x 5.00 mm

- Cut: oval cabochon

- Color: light blue from semi-transparent to translucent

- Purity: inclusions

- Treatments: none

- Origin: Sri Lanka