Navajo handcrafted dangle earrings. Genuine red spiny oyster shells are set in solid sterling silver. Small details such as silver twist wire and silver beads add to the earrings unique style. The crosses measure only 5/8" x 5/8" but dangle a total of 1-1/2 " when worn. Perfectly sized. NAVAJO HANDCRAFTED DANGLE EARRINGS Spiny Oyster Shell (reddish 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.