Bible Dictionaries
Amethyst

Smith's Bible Dictionary

Amethyst. (Hebrew, achlamah). A subspecies of quartz of a bluish-violet color. Mention is made of this precious stone, which formed the third in the third row of the high priestly breastplate, in Exodus 28:19; Exodus 39:12. It occurs also in Revelation 21:20.

Bibliography Information
Smith, William, Dr. Entry for 'Amethyst'. Smith's Bible Dictionary. https://www.studylight.org/​dictionaries/​eng/​sbd/​a/amethyst.html. 1901.