Commentaries:
Jamieson, Fausset, and Brown
sardonyx—a gem having the redness of the cornelian, and the whiteness of the onyx.
sardius—(See on Revelation 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].
Other Jamieson, Fausset, and Brown entries containing Revelation 21:20:
Song of Solomon 5:14
Isaiah 54:11
Ezekiel 28:13
Haggai 2:8
Galatians 2:9
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