Fossils for sale, minerals, healing crystals, tumblestones, jewellery and Seashells. All specimens on My Lost Gems are genuine and come with a certificate, carefully selected high quality, and have been fully authenticated. We offer unique and selected 'buy what you see'. We also offer bulk and wholesale pricing. New products are constantly being added.
Dioptase is an intense emerald-green to bluish-green copper cyclosilicate mineral. It is transparent to translucent. Its luster is vitreous to sub-adamantine. It has a hardness of 5, the same as tooth enamel. Dioptase is very fragile and specimens must be handled with great care. It is a trigonal mineral, forming 6-sided crystals that are terminated by rhombohedra.