Garnet
From BiblePortal Wikipedia
The Nuttall Encyclopedia [1]
A well-known precious stone of a vitreous lustre, and usually of a dark-red colour, resembling a ruby, but also found in various other shades, e. g . black, green, and yellow. The finest specimens are brought from Ceylon, Pegu, and Greenland. The species of garnet crystal known as Pyrope, when cut in the shape of a tallow drop, is called a carbuncle.