(Heb. 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; 39:12) It occurs also in (Revelation 21:20)
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Bibliography Information Smith, William, Dr. "Entry for 'Amethyst'". "Smith's Bible Dictionary". <http://classic.studylight.org/dic/sbd/view.cgi?number=T262>. 1901.