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.
Rock, Northumberland Rock, Northumberland Rock is a village in Northumberland, England about north of Alnwick. The single street has on one side cottages and gardens; on the other, an ornamental lake. At the end is a little Norman church; and beyond that, the battlements and towers of Rock Hall. The sundial and the inscribed stone in the end wall of the schoolroom were originally part of a residence of the Salkelds which stood on the site. The Hall was then their seat – their coat of arms still remains above an old, blocked doorway to the right of the modern entrance. Later