Hot House Glass - "Tri-Colored 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 two ribbons each of opaque red, yellow, and dark blue which are separated by clear and 3 fine lines of black.  Approximately 1 1/2" shy in diameter.  It is signed with a drawing of a house under flames.