Probably the ancient topaz of a golden colour. Re 21:20. The Greek word ?????????? occurs in the LXX in Ex 28:20; 36:20 (Ex 39:13); Eze 28:13.
the fifth of onyx, the sixth of sardius, the seventh of chrysolite, the eighth of beryl, the ninth of topaz, the tenth of chrysoprase, the eleventh of jacinth, the twelfth of amethyst.