Sterling Silver Irish Shamrock Connemara Marble Marcasite Ring by Solvar Beautifully Crafted Sterling Silver Irish Shamrock Connemara Marble Marcasite Ring. Made by the renowned Solvar. Solvar has evolved to become recognized as a leader in the design and manufacture of Destination and Heritage Jewelry. This beautiful Marcasite Shamrock Ring is made from real Connemara marble. Hallmarked at the Assay Office in Dublin Castle, Ireland. Ring measures approximately 6/16" W, matching pendant and earrings also available. Presented in a gift box. Designed in Ireland and delivered from Ireland to the US within 6-9 Days plus free Irish gift with every purchase.