Renna 18-Karat Yellow Gold Dream Shell Amethyst and Diamond Starfish Bracelet. ONE-OF-A-KIND A delicately hand carved amethyst starfish dances around the wrist. Approximately 7 inches. We believe in the communicative and emotional power of jewelry. We are aiming to become the pre-eminant sustainable jewelryhouse of the modern era. We create jewelry that is unique and feels distinctly and purposefully yours.Sustainability: Recycled Gold. We use 100% recycled 18-karat gold and create each of our pieces by hand.