Sterling Silver & Marcasite Irish Shamrock Marble Earrings by Solvar Beautifully Crafted Marcasite Irish Sterling Silver and Shamrock Marble Earrings. Made by the renowned Solvar. Solvar has evolved to become recognized as a leader in the design and manufacture of Destination and Heritage Jewelry. These beautiful Marcasite Shamrock Earrings are made from real Connemara marble. Hallmarked at the Assay Office in Dublin Castle, Ireland. Each earring measures 5/10 inch wide 1 inch long including fitting and 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.