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: 1.45 Kt Size 7.15 x 5.05 x 4.40 mm

- Cutting: mixed oval

- Colour: shiny yellow

- Purity: Pure

- Treatments: none

- Origin: Sri Lanka