Strong’s Hebrew
H306 — 'achlamah
The entry below is Strong’s own definition (1890, public domain), and every verse where the word occurs.
אַחְלָמָה
'achlamah — pronounced akh-law'-maw
perhaps from 2492 (and thus dream-stone); a gem, probably the amethyst:--amethyst. see H02492
0 occurrences in the KJV.