Pizzazz! That's what genuine, gleaming onyx will add to jewelry designs. Such beauty costs a little more, and in this case, it's worth it. This material is highly-polished striped onyx, dyed black in color. As the dye is accepted differently throughout the stone, periodic banding may still be displayed. Testing for colorfastness is recommended.
Beads>Grade B>OnyxBeadsGrade BOnyxBlacksRondelle3mmDyedhttp://www.firemountaingems.com/itemdetails/h203225gsH203225GSBead, black onyx (dyed), 5x3mm faceted rondelle, B grade, Mohs hardness 6-1/2 to 7. Sold per 16-inch strand.//image1.fmgstatic.com/images/p3225gsb.jpg15.1015.10As Low As $7.76 per strand