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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.
The term jade is used for two different minerals, jadeite and nephrite. Only jadeite has value as a gem material in and of itself. Color. For jadeite, the intensity of the green color, combined with a high degree of translucency are the key factors in judging value. Stones which are too dark in color or not so translucent are less highly valued.