Sapphire

Description

The name refers to the variety of more or less intense blue 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 1.51 Kt

- Size 7.00 x 5.15 x 4.30 mm

- Cut: cabochon oval

- Color: light blue semi-transparent to translucent

- Purity: inclusions

- Treatments: none

- Origin: Sri Lanka