de to Natural Black Opal Band Ring, Black Opal Half Eternity Ring Platinum Plated. This ring contains natural Australian Fire Opals that are dyed black, measuring 3x4mm (the side stones are cubic zirconias). This ring is sterling silver and platinum plated, also available in gold plating or rose gold plating. This ring is available full and half sizes from 4-12. This item includes a velvet gift box and a certificate of authenticity. This item is made to order, please allow about 10-15 days for processing and delivery.