Topaz

Description

Aluminum silicate containing fluorine and oxydriles; it crystallizes in the orthorhombic system
General Physical properties: hardness 8 - density from 3.52 to 3.56 g/cm3 - refractive indexes approximately 1.610 and 1.618 or 1.630 and 1.638

- Weight: 33.08 Kt

- Size 23.10 x 15.80 x 9.90 mm

- Cut: table and steps with octagonal shape

- Color: very intense light blue, almost dark blue

- Purity: pure

- Treatments: irradiation

- Origin: Brazil