Nephrite Nephrite Nephrite is a variety of the calcium, magnesium, and iron-rich amphibole minerals tremolite or actinolite (aggregates of which also make up one form of asbestos). The chemical formula for nephrite is Ca(Mg, Fe)SiO(OH). 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. While nephrite jade possesses mainly grays and greens (and occasionally yellows, browns or whites), jadeite jade, which is rarer, can also contain blacks, reds, pinks and violets. Nephrite jade is an ornamental stone used in carvings, beads, or cabochon cut gemstones.
Two Forms (Divided Circle) Two Forms (Divided Circle) Two Forms (Divided Circle) (BH 477) is a bronze sculpture by Barbara Hepworth, designed in 1969. Six numbered copies were cast, plus one (0/6) retained by the sculptor. The sculpture's dimensions are by by . The front of the base has "Barbara Hepworth 1969" inscribed on it followed by the number of the sculpture, as well as "Morris | Singer | FOUNDERS | LONDON", both inscribed by casting. The sculpture is considered to be one of Britain's most recognisable works. The sculpture is late work by Hepworth, created only 6 years before her death in a