Pyrope

Pyrope, a gem, often called Carbuncle and Hyacinth by lapidaries, which is nearly allied to garnet. Composed of silica, alumina, magnesia, lime, and the protoxides of iron, chrome, and manganese, it is always of a deep red colour, and is transparent, or at least translucent. It generally occurs in roundish grains, but rarely in imperfectly cubical crystals. Pyropes are found chiefly in Saxony and Bohemia, also at Elie in Fife (where they are called Elie Rubies).