G0271
ἀμέθυστος
amethyst
ἀμέθυστος, -ου, ἡ (accusative to Plut., ἀ- μεθύω, being regarded as an antidote against drunkenness) [in LXX: Exo.28:19 36:19 39:12 Eze.28:13 * ;] amethyst, a purple quartz: Rev.21:20.† (AS)
Full Thayer's lexicon entry
ἀμέθυστος — améthystos
ἀμέθυστος,, ἡ, amethyst, a precious stone of a violet and purple color (Exo 28:19; according to Phavorinus so called διά τό ἀπείργειν τῆς μέθης (so Plutarch, quaest. conviv. iii. 1, 3, 6)): Rev 21:20. (Cf. B. D. under the word.)
1 occurrence