This is one of the greatest UV marble that has ever been created. The UV lines were inserted between the fireball lines, and thus the contrast between regular light and the black light action are SPECTACULAR!! Coated with the usual layer of thick crystal so the colors just pop, this is a truly remarkable marble! A super rare marble, signed with the date '2006 3'. I'm having a terribly hard time letting go of this one, let me tell ya'....discipline Brian....discipline.