Here we have an incredible Navajo silver choker style necklace having 3 blue Royston turquoise ovals deepset on handcarved heart silver teardrop heart pendants accented with handcarved silver stars! The necklace has a single strand of handcarved silver oblong and round beads with a handmade silver hook and eye clasp! The pendants measures about 2ΒΌ tall Sterling silver. The length of the necklace measures around 17? Sturdy 42.3 grams. No marks but tested as sterling silver great addition to your collection Royston Turquoise Jewelry. Royston Turquoise comes from the Royston mining district located near Tonopah, Nevada and has been mined since the early 1900s. “Royston Turquoise” originally consisted of four old Turquoise claims located within the Royston range: Bunker Hill, Easter Blue, Oscar Wehrend, and Royal Blue. The Royal Blue mine was responsible for the majority of the turquoise mined in the area and is often referred to as Royston Royal Blue. The Royston area mines produce some incredible turquoise ranging in color from a deep sky blue to dark greens. Often the colors run together in the same stone with the golden brown mottled or webbed matrix. The mines produce some very high grade material, but in limited quantities.