Pair Murano ? Blown Glass and Marble Table Lamps

Heavy seamless blown glass with marble base. 3 feet tall. 6 inches wide at the widest part of the glass. I haven't seen any like these except a pair of murano lamps with similar shaped blown glass. The color of the glass is vivid with creamy swirls. Does anyone have a clue? I found them at a thrift store. They are stunning and extremely heavy..