Strong's #2393: iaspis (pronounced ee'-as-pis)

probably of foreign origin (see 3471); "jasper", a gem:--jasper.

Thayer's Greek Lexicon:

̓́

iaspis

1) jasper, a precious stone of various colours (for some are purple, others blue, others green, and others the colour of brass)

Part of Speech: noun feminine

Usage:

This word is used 4 times:

 

Revelation 4:3: "was to look upon like a jasper and a sardine stone: and"
Revelation 21:11: "a stone most precious, even like a jasper stone, clear as crystal;"
Revelation 21:18: "wall of it was of jasper: and the city was pure"
Revelation 21:19: "The first foundation was jasper; the second, sapphire; the"