0.5ct Lightning Ridge Semi Black Opal Ring ~ 'Tasman Break' | 925 Sterling Silver | Solid Australian OpalTasman Break ~ Reds along with rolling flashes of blue and green surge through this Lightning Ridge opal like waves breaking across the Tasman Sea. This ring is sold at a discounted rate as it is ex display stock. Minor marks may be present on the silver band. Adorn yourself with the timeless beauty of Australia with this handcrafted 0. 5ct Solid Lightning Ridge Semi Black Opal 925 Sterling Silver Ring.