The difference between malachite and similar jade. Malachite is characterized by a special peacock green and typical strips, which is not easily confused with other stones, but similar to beryl and chrysocolla. The difference is that the turquoise has a large hardness of 5-6, a small density of 2.6-2.9 g/cm3, and a small refractive index of 1.62. The hasronite has a small hardness of 2-4, a low density of 2-2.4 g/cm3, and a refractive index of 1.57.

Variety and evaluation of malachite. Malachite is used as ornamental stone and craft ornamental. It requires bright colors, pure and uniform, clear ribbons, and dense and non-porous blocks. The bigger the better. Malachite opal requires a positive background and a clear light band. Malachite can be carved into chicken heart pendants, egg-shaped ring faces, necklaces, and can also be made into stamp materials.

Maintenance of malachite. Malachite is not durable and has low hardness. It can't keep good luster for a long time. It can only be used as beading and brooch. The Russians used malachite as a building interior material, and the large pillars of the St. Isaac's Cathedral in Leningrad were set with malachite. Malachite is also used to engrave various worship supplies and decorations, fireplaces and table tops.

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