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AAA grade Nephrite bead string. 40cm. 6mm bead size.

R215.20

Nephrite bead string. 40cm. 6mm bead size. Nephrite and jadeite were used from prehistoric periods for hardstone carving. Jadeite has about the same hardness as quartz, while nephrite is somewhat softer. Both nephrite and jadeite are tough, but nephrite is tougher than jadeite. It was not until the 19th century that a French mineralogist determined that “jade” was in fact two different materials. The trade name jadite (not to be confused with jadeite) is sometimes used for translucent or opaque green glass. Among the earliest known jade artifacts excavated from prehistoric sites are simple ornaments with bead, button, and tubular shapes.[3] Additionally, jade was used for axe heads, knives, and other weapons, which can be delicately shaped. As metal-working technologies became available, the beauty of jade made it valuable for ornaments and decorative objects. Jadeite measures between 6.5 and 7.0 Mohs hardness, and Nephrite between 5.5 and 6.0,[4] so it can be worked with quartz or garnet sand, and polished with bamboo or even ground jade