From an unused root meaning to glisten; shining; a gem, probably the garnet
KJV Usage: emerald.
Brown-Driver-Briggs' Hebrew Definitions
1. a precious stone in the high priest's breastplate a. perhaps an emerald, turquoise, ruby, or carbuncle 2. jewels imported from Tyre
Origin: from an unused root meaning to glisten
Parts of Speech: Noun Masculine