Sapphire

Description

The name refers to the variety of yellow color 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: 1.00 Kt

- Size 6.60 x 4.60 x 3.65 mm

- Cutting: mixed of half-moon shape

- Colour: light shiny yellow

- Purity: Pure

- Treatments: none

- Origin: Sri Lanka