Chrysolite (χρυσόλιθος, Revelation 21:20)
In modern usage the name ‘chrysolite’ is applied to a transparent variety of olivine, used as a gem-stone and often called ‘peridot.’ The ancients applied the word to various yellowish gems. The LXX [Note: XX Septuagint.] gives it as the equivalent of תַּרְשִׁישׁ, which Flinders Petrie (HDB [Note: DB Hastings’ Dict. of the Bible (5 vols.).] iv. 620 b) is inclined to identify with yellow jasper. The later Greeks gave the name chrysolite to the topaz, which was unknown in earlier times.
James Strahan.