This is a very heavy freeform abstract bowl most commonly referred to as a Bear Paw, and made by Blenko. Blenko glass in not marked, but the cooling marks and the trapped interior bubbles are inherent to Blenko's hand made glass. The color is a cool electric blue, but not quite cobalt blue. It measures 8 1/2" x 6" x 1 1/2" high (penny shown in 1 photo for scale). Beautiful condition!