Cuprite

Description

It is chemically known as "red copper oxide" due to its dark red color
General Physical properties: density from 5.85 to 6.15 - monorefractive with high refractive index (2.849) - hardness from 3.5 to 4
Due to the low hardness, the very rare transparent crystals are cut in buds only for collecting purposes

- Weight: 5.01 Kt

- Size 10.50 x 7.40 x 4.50 mm

- Cut: mix, oval shape

- Color: intense dark red, metallic appearance

- Purity: slightly included

- Treatments: none

- Origin: Onganja mine - Namibia -