amethyst, a gem in the third row on the ephod, breastplate of judgment worn by the high priest. Transliteration of the Septuagint word. Identification is not certain but is a purple stone perhaps a corundum or red or brown jasper.

Root √אחל: אחל (existence & meaning dub.)

אַחְלָ֑מָה n.f amethyst . perh.(etym. dub.)