We carry this "stone" in earrings, pendants, rings and two sizes of bar necklaces. These 18-inch (polished Sterling chain), 1.25-inch wide and 5/8th's-inch tall bar necklaces are a lot of bang for the buck. The Navajo buy this material in a compressed "brick" about the size of a house brick. One of the well-known turquoise mines takes pieces of turquoise, spiney oyster shell and bronze and puts the mixture into a machine that applies huge amounts of pressure which turns these elements into a hardened brick. We call it what the mine owners call it—turquoise, spiney and bronze mix. Hallmarked "DS," which is Donovan Skeets. Always free priority shipping.