Image 1 of 1 Peruvian Blue Opal Necklace $225.00 Created with Tarnish-Resistant Argentium Silver with Roller-printed Leaf designs, Peruvian Blue Opals, and pearls. Add To Cart Added! Created with Tarnish-Resistant Argentium Silver with Roller-printed Leaf designs, Peruvian Blue Opals, and pearls.