Jasper. A precious stone frequently noticed in Scripture. It was the last of the twelve inserted in the high priest's breastplate, Exodus 28:20; Exodus 39:13, and the first of the twelve used in the foundations of the new Jerusalem. Revelation 21:19.
The characteristics of the stone, as far as they are specified in Scripture, Revelation 21:11, are that it "was most precious," and "like crystal;" we may also infer from Revelation 4:3, that it was a stone of brilliant and transparent light. The stone which we name "jasper" does not accord with this description. There can be no doubt that the diamond would more adequately answer to the description in the book of Revelation.
More than 4,500 subjects and proper names are defined and analyzed with corresponding Scripture references. Bible students have used "Smith's Bible Dictionary" since its introduction in the 1880s, making it a trustworthy classic.Wikipedia
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