This is an astonishing vintage Navajo turquoise and silver necklace. This museum quality piece contains three huge turquoise stones that appear to be from the old Morenci turquoise mine. The largest stone measures around 16mmx16mm Surrounding the stones are impeccable silver works that consist on handstamped design pendant measures around 3″? X1″½ Sterling silver chain measures 18inches long total weight49.53grams this is one of the finest Morenci turquoise necklaces we currently have Morenci turquoise is a high-grade American turquoise from a former copper mine in southeastern Arizona, known for its deep blue color, iron pyrite (fool’s gold) matrix, and occasional web-like patterns. Mined predominantly from 1956 to 1984, it is now a collectible and valuable gemstone, often used in high-quality Native American jewelry, but all available material was extracted before 1984 Rarity: High-grade Morenci turquoise, especially with pyrite, is scarce, with less than 10% of the mine’s output considered high grade.