Sapphire

Description

The name refers to the more or less intense blue variety of corundum (aluminum oxide that crystallizes in the trigonal system)

General physical properties: hardness 9 - density 4.00 g / cm ³ & nbsp; - refractive indices about 1.760 and 1.769

Weight totale 1.17 Kt

Diameter 3.70 mm

Height 2.20 mm

Cut: mixed round shape

Color: very bright light blue

Purity: very slight inclusions

Treatments: none

Origin: Sri Lanka