iaspis denotes a precious stone used in comparisons of radiance and appearance and in a city's wall and foundation.

The term denotes a precious stone: it is used in comparisons of radiance and appearance, and it names the material of a wall and its first foundation.

1. Precious stone in imagery and construction · dominant

   In Revelation 21:11, the dative singular form occurs in a comparison of radiance to a most precious jewel; in Revelation 4:3 it occurs in a comparison describing the seated one's appearance. The nominative singular form names the wall's material in Revelation 21:18 and the first foundation in Revelation 21:19; the APB renders these clauses with “jasper.”

   Revelation 21:11Revelation 4:3Revelation 21:18Revelation 21:19

In the Anselm Project Bible: Across the cited verses, the APB explicitly uses “jasper” in comparisons of radiance and appearance and in descriptions of the wall and its foundation. These renderings confirm the verse contexts rather than isolate every grammatical contribution.