Josh mixes a new formula of Corona glass, he tests each batch for
its unique color characteristics and compatibility with the clear glass he uses in the studio. To
accomplish this, he gathers a
swirl of the molten glass, sculpts it and adds his own little touches,
then embeds it inside a crystal orb. If this "marble" survives the
cooling process without cracking, then Eureka!, the new formula is a
success. Each resulting sphere then contains a unique twist of Corona
glass, never to be duplicated.