Malachite and Gypsum - Morocco - crystal minerals 4 cm / 33g / AQ566

Malachite belongs to the carbonate group. It contains copper, carbon, oxygen, and hydrogen. Its chemical formula is Cu2CO3(OH)2.
Its hardness is greater than 3.5/10 and its density is greater than 3.9 (1 for water). The line on porcelain is light green.
It usually occurs in massive form or in radiating crystals. This mineral is often associated with Azurite.
Malachite has been used since ancient times as a pigment. Its color is a deep green.

Gypsum belongs to the sulfate group. It contains calcium and sulfur. Its chemical formula is CaSO4.2H2O.
Its crystals come in several forms, tabular, lamellar, prismatic and when they are translucent take the name of Selenite. Impurities give it beautiful brown, red-brown, yellow, gray or orange colors.
The hardness of gypsum is low, equal to 2/10, just higher than that of talc. Its density is equal to 2.3 (1 for water). The line on the porcelain is white.
The massive variety is called Alabaster and allows for fine carving of sculptures which nevertheless remain very fragile.
GYPSUM is widely used in the production of plaster.

Unique piece - Contractual photos

Origin: crystal minerals from Morocco

Dimensions: 4 x 3 x 1.7 cm

Weight: 33 g