AAn Implosion style marble hand-created using sturdy Borosilicate glass. The inside spires are a translucent purplish-pink with tiny air bubbles at the peak of every colored spike. The back of the marble features a sparkley metallic blue with overlayed pinwheeled dots of the same purplish-pink interior. Any marble purchase comes with a free stand to display your amazing glass artwork (stand shipped with marble may be slightly different than the one in the picture). Shipping is through USPS First Class/Priority.