Beryl (tarshı̂sh) occurs in Ex. 28:20. It is generally supposed that the tarshı̂sh derives its name from the place so called, in Spain. Beryl is a mineral of great hardness, and, when transparent, of much beauty. By tarshı̂sh the modern yellow topaz is probably intended, while in Rev. 21:20 a different stone is perhaps referred to, probably the mineral now called beryl, which is identical with the emerald except in color, being a light green or bluish-green.