Onyx. Genesis 2:12, Exodus 28:9, Exodus 28:20, Exodus 35:9, Exodus 35:27, 1 Chronicles 29:2, Job 28:16, Ezekiel 28:13. Opinions differ as to the gem intended by this word; some prefer translating it "beryl." The onyx has its particles arranged in parallel layers; white alternating with blue, gray, or brown. It was much used by the ancients for cameos.