Shop › Green Turquoise & Spiny Oyster Long Ristra Earrings Image 1 of 2 Image 2 of 2 Green Turquoise & Spiny Oyster Long Ristra Earrings $68.00 Handmade cascading earrings featuring turquoise and warm orange-red spiny oyster shell. Individually linked beads create a colorful, flowing design, finished with sterling silver ear wires. Add To Cart Added! Handmade cascading earrings featuring turquoise and warm orange-red spiny oyster shell. Individually linked beads create a colorful, flowing design, finished with sterling silver ear wires.