Pebble Black Spinel and Diamond Stacking Ring SetThe Pebble Black Spinel and Diamond Stacking Rings are versatile for all occasions. Black Spinel Elegance: Black spinel stones contributes to the stack's distinctive appeal, creating a contrast with the sparkling diamonds. Stacking Versatility: The Pebble Black Spinel and Diamond Stacking Rings are designed for stacking, offering versatility in how you choose to wear them. Mix and match the rings to create different combinations depending on the