Antique American Indian Art, LLC. Navajo Blue Turquoise Cabochon with Dark Matrix in Sterling Silver Pendant. Estate Jewelry; Late 20th Century: 1 3/4″ H x 3/4″ W. We are confident that you will be pleased with the value, service and peace-of-mind that our gallery can offer you. Thank you for looking! We will be adding lots of quality Antique American Indian Art over the next few months.