garnet

n. type of precious stone; deep red color

Garnet is a group of minerals that have been used since the Bronze Age as gemstones and abrasives. Garnets are most often seen in red, but are available in a wide variety of colors spanning the entire spectrum. The name "garnet" comes from the Latin granatus ("grain"), possibly a reference to the Punica granatum ("pomegranate"), a plant with red seeds similar in shape, size, and color to some garnet crystals.
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Noun
1. any of a group of hard glassy minerals (silicates of various metals) used as gemstones and as an abrasive
(hypernym) mineral
(hyponym) almandite, almandine

(n.)
A tackle for hoisting cargo in our out.
  

(n.)
A mineral having many varieties differing in color and in their constituents, but with the same crystallization (isometric), and conforming to the same general chemical formula. The commonest color is red, the luster is vitreous, and the hardness greater than that of quartz. The dodecahedron and trapezohedron are the common forms.
  

A group stones that share a similar chemical structure, the garnet family includes pyrope, almandine, and demantoid, among others. Almandine garnet are red varieties, with pyrope being the common Bohemian garnet found in much Victorian and turn of the century jewelry. Demantoid garnet is a much rarer bright green variety, first mined in the mid-nineteenth century. Demantoid has the highest dispersion of colored stones usually found on the market, which means it is very sparkly. Demantoid is generally found only relatively small stones.