Bullseye thin black (0100.50) from Coatings by Sandberg.

In the world of Dichroic Glass, the Rainbow 2 is the most difficult to produce. This is true for all manufacturers of Dichroic Glass. Peeling of the coating during the fusing, lampworking and/or blowing process can occasionally take place. Because of this very important artist feedback, CBS has redesigned it's Rainbow 2 coating.

This new Rainbow 2 PLUS is more durable and can handle the abuse of high heat. Prior to hotworking, the RB2 PLUS looks darker than normal but brightens when fired.

Note: Rainbow 2 is still available for those artists that enjoy it's unique crazing affects.