Some say it is so called from the island "Topazus"; on this stone Simeon's name was engraven.The tenth, a chrysoprasus; a stone of a green colour, inclining to that of gold, from whence it has its name; for this is the agate in the breastplate, which was Napthali's stone.
The eleventh, a jacinth; or "hyacinth": a stone of a purple, or violet colour, from whence it has its name; though what the moderns so call is of a deep reddish yellow, pretty near a flame colour. Zabulon's stone was the diamond.
The twelfth, an amethyst; a stone of a violet colour, bordering on purple: it has been thought a preservative from drunkenness, from whence it seems to have its name. On this stone was written the name of Gad.
Agreeably to this account of John's, the Jews speak of the tabernacle above being built on twelve precious stones; and sometimes they say , that the holy blessed God will found Jerusalem with ten kind of precious stones, and which they mention, and several of which are the same with these.
Zohar in Gen. fol. 17. 2. & in Exod. fol. 65. 4. Abkath Rocel, p. 150. Vid. Zohar in Exod. fol. 96.