Ruby

Description

The name refers to the more or less intense red 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 0.55 Kt

Diameter 2.90 mm

Height 1.40 mm

Cut: mixed round shape

Color: intense red

Purity: very slight inclusions

Treatments: none

Origin: Thailand