Shop the Frills › Petite Onyx Halo Ring 1 / 2 Image 1 of 2 Image 2 of 2 Petite Onyx Halo Ring $42.00 A petite marquis shaped onyx stone set in a clear crystal halo on an 18k yellow gold electroplate band. Size: Select Size 5 7 9 10 Quantity: Add To Cart Added! A petite marquis shaped onyx stone set in a clear crystal halo on an 18k yellow gold electroplate band.