Beautiful handcrafted ring. The center cross is cut from genuine Kingman turquoise and the hearts are made with orange spiny oyster shell all of which is set in solid sterling silver.The ring measures 1-1/2" in length and has a width of 3/4". Signed by the artist, Philbert Secatero.The wide shank makes for a secure and comfortable fit. A truly unique ring that can be worn on any finger. NAVAJO HANDCRAFTED RING BY ARTIST PHILBERT SECATERO Kingman Turquoise originates in the Mineral Park Mining District near Kingman, Arizona. One of the largest domestic turquoise mines, it is found in a large open pit copper mine in the high desert country. The Kingman Mine district was first mined by Native Americans; it was part of the most extensive prehistoric workings in Arizona. Spiny Oyster Shell (orange coloring) Living Spondylus shells are, indeed, very spiny, but the polished product looks very smooth the most used Spondylid Bivalve shell colors include orange, reds, and purples and may include distinct striations and color variations. One also finds pink, red, brown, yellow, orange, and white on the market