Excellent-quality jet beads feature a slightly metallic luster and are hand-cut and polished. A lighter-weight gemstone, jet has a Mohs hardness of 2-1/2 to 4 and is well-suited for necklace and earring designs. Jet gemstones are mined in the Yunnan and Liaoning province of China. The stones are formed over millions of years--the result of carbon compression and water. Sizes, shapes and colors may vary with handcrafted items. Occasional natural voids may exist on the surface of some beads.
Beads>Grade A>JetBeadsGrade AJetBlacksBall10mmNaturalhttp://www.firemountaingems.com/itemdetails/h202157geH202157GEBead, jet (natural), 10mm hand-cut round, A- grade, Mohs hardness 2-1/2 to 4. Sold per 16-inch strand.//image4.fmgstatic.com/images/p2157geb.jpg49.0549.05As Low As $25.21 per strand