a name which indicates the formation of the gem, a layer of sard, and a layer of onyx, marked by the red of the sard and the white of the onyx. It was used among the Romans both for cameos and for signets. It forms the fifth foundation of the wall of the heavenly Jerusalem, Revelation 21:20 .
With over 3,400 entries, this timeless classic is THE reference guide to New Testament Greek words for English readers. It explains the meaning of the original Greek with the added dimension of the context of the Greek word.Wikipedia
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