This Natural Rare Opalina (Ovl) Trilogy Ring is a must-have in your accessory collection. Made from Platinum Overlay Sterling Silver, this 3.000 Ct stone embellished ring is stylish and safe to your sensitive skin. Opalina is the national stone of Peru and due to some unfortunate events during recent years the dyed stones have been mass marketed by unreputable dealers as Peruvian Blue Opal. The dyed stone can be easily identified as the blue colour will appear uneven. Dyed stones are quite common and sell very cheaply at gem shows and on internet auctions.