20. sardonyx—a gem having the redness of the cornelian, and the whiteness of the onyx.
sardius—(See on Re 4:3).
chrysolite—described by Pliny as transparent and of a golden brightness, like our topaz: different from our pale green crystallized chrysolite.
beryl—of a sea-green color.
topaz—Pliny [37.32], makes it green and transparent, like our chrysolite.
chrysoprasus—somewhat pale, and having the purple color of the amethyst [Pliny, 37, 20, 21].
jacinth—The flashing violet brightness in the amethyst is diluted in the jacinth [Pliny, 37.41].