Exodus 28:11

8 And the skilfully woven band, which is upon it, wherewith to gird it on, shall be like the work thereof [and] of the same piece; of gold, of blue, and purple, and scarlet, and fine twined linen.

9 And thou shalt take two onyx stones, and grave on them the names of the children of Israel:

10 six of their names on the one stone, and the names of the six that remain on the other stone, according to their birth.

11 With the work of an engraver in stone, like the engravings of a signet, shalt thou engrave the two stones, according to the names of the children of Israel: thou shalt make them to be inclosed in settings of gold.

12 And thou shalt put the two stones upon the shoulder-pieces of the ephod, to be stones of memorial for the children of Israel: and Aaron shall bear their names before Jehovah upon his two shoulders for a memorial.

13 And thou shalt make settings of gold,

14 and two chains of pure gold; like cords shalt thou make them, of wreathen work: and thou shalt put the wreathen chains on the settings.