Studio Gallery Pictures -1.7.04 Check out Geoff at work in the studio. See how he creates the marbles and scupltures About Geoff - 10.28.03 Geoffrey Beetem, in the contemporary handmade marble field, is regarded by many as the master glass artist in the use of dichroic glass in contemporary handmade glass marbles. Geoffrey Beetem is an artist who continues to explore the rich colors and unique technique that has become his hallmark.