Bible Dictionaries
Sardonyx

Wilson's Dictionary of Bible Types

Revelation 21:20 (b) The beauty and the value of these stones probably represent the beauty and the value of the nation of Israel (the twelve tribes) in GOD's program of world development. Every blessing we enjoy has come to us through the influence of Israel. These influences were of various kinds and characters, and this fact is represented by the various kinds of stones.

Bibliography Information
Watson, Walter. Entry for 'Sardonyx'. Wilson's Dictoinary of Bible Types. https://www.studylight.org/​dictionaries/​eng/​wdt/​s/sardonyx.html. 1957.