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Azurite Gemstone Information. Azurite is a rare variety of gemstone-quality copper ore. Azurite is one of two basic copper carbonate minerals (malachite is the other). Azurite is rarer than malachite and is considered more valuable. Azurite gets its name from the Persian word 'lazhward', which refers to its distinctive, vivid blue color.
Agate /ËaeÉ¡Ét/ ËÃ¦É¡Ét is a cryptocrystalline variety of, silica chiefly, chalcedony characterised by its fineness of grain and brightness of. colorhe first deposit on the wall of a cavity, forming the skin of the agate, is generally a dark greenish mineral substance, like celadonite, delessite or  green earth , which are rich in iron probably derived from the decomposition of the augite in the enclosing volcanic rock.