Hot House Glass - "Purple and Yellow Swirl with Black Lines"

This is a handmade marble by artists, Brett Young and Larry Zengel of Hot House Glass.  It is a swirl marble with sets of 3 sparkly ribbons of lemon yellow and sparkly purple separated by finer lines of black wrapping around the marble.  Approximately 1 1/4" in diameter.  It is signed with a drawing of a house under flames.