Onyx Stone Ring - Hinge Designs Onyx Stone Ring - Hinge Designs < > Hinge Designs Onyx Stone Ring $90 Each piece is hand carved out of natural stone. While each ring is quite sturdy and has been tumbled and tested in the studio they are still made of stone and can be vulnerable when dropped or knocked against a hard surface. Stones should withstand other normal wear and tear. size 9.5 Default Title - $90.00 is back-ordered. We will ship it separately in 10 to 15 days.