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Nephrite is a variety of the calcium and magnesium-rich amphibole mineral actinolite (aggregates of which also make up one form of asbestos). It is one of two different mineral species called jade. The other mineral species known as jade is jadeite, which is a variety of pyroxene. Nephrite jade is an ornamental stone, used in carvings, beads, or cabochon cut gemstones.
Some Chromium contained in nephrite jade that is good for the people’s kidney proved by medical science
