It is the fabulous Turquoise that sets this Vintage Navajo Sterling Silver Squash Blossom Necklace Apart. I believe it is Nevada Pilot Mountain with taupe brown to gold inclusions. This is also a very Wearable Necklace ; the perfect size for high impact but not ridiculous scale. It measures appx 26 inches without the Nada which adds 2 3/4 inch length and appx 2 1/2 width. Weight is appx 5.3 ounces. No hallmarks. Fine well crafted old piece.