Boyd’s Bible Dictionary:
(beril) (jewel). The first stone in fourth row of a high priest’s breastplate (Ex. 28:20).
Concise Bible Dictionary:
There is no certainty as to what stone the word tarshish denotes. The LXX translate it by different words. In Ezekiel 1:16 and Ezekiel 10:9 the “wheels” are compared to its color, without stating what that was. Some suppose it was the golden topaz; others that it was the chrysolite. It was the first in the fourth row of the high priest’s breastplate, and is mentioned in the foundation of the heavenly Jerusalem (Ex. 28:20; Ex. 39:13; Song of Sol. 5:14; Ezek. 28:13; Dan. 10:6). In Revelation 21:20 the word is βήρυλλος, beryl.
Topaz
Chrysolite – Modern Peridot
Strong’s Dictionary of Hebrew Words:
Transliteration:
tarshiysh
Meaning:
probably of foreign derivation (compare 8659); a gem, perhaps the topaz
Jackson’s Dictionary of Scripture Proper Names:
she will impoverish