'Opal Bloom' is a gorgeous 14ct yellow gold flower design opal ring set with eight brilliant multi-coloured, round South Australian solid crystal opals and ten sparkling white diamonds. Ring size: O (AU, UK & EU) 7 1/4 (US & CAN)Opal size: 8 - 4mm x 4mmOpal weight: 1.26 caratsOpal shape: RoundOpal type: Solid crystal opalsOpal colour: Multi-colourOpal origin: Coober PedyDiamonds: 10 (0.05 carats)Metal: 14ct yellow gold (2.79 grams)SKU: GOR172 This crystal opal ring features a natural, ethically sourced Australian opal. Black Star Opal provides a signed Certificate of Authenticity upon purchase. ABOUT CRYSTAL OPALS Solid crystal opals feature a translucent or transparent, light body tone with flashes of bright colour. Crystal opal resembles rock crystal or glass - hold this stone up to the light and you can observe some light passing through this beautiful opal gemstone. Some dark and black opal can exhibit translucency too, and this is called black crystal opal. Read more about Australian opals.