A hand polished natural blue Stone Mountain Turquoise focal bead $65 for 19.7 carats 33x15x4.5 mm, 2.5 hole Here is a Stone Mountain Turquoise vein nugget that has gone through a careful process of tumbling with several different polishing mediums. Then we drill the hole and widen it out before hand polishing the stone with a foredom. This stone was carefully selected for it's ability to take a hole of this size without cracking.