It has been rumored how the clasp was stored and that it was improper storage which led to its demise. Both claims have not been verified. Perhaps these details have been presented to the court today. I thought there was more DNA extracted from the clasp which could be tested but on that I may have misunderstood.
From the many media articles today it appears that the experts have received all documentation they have asked for and have stated that there was cooperation from the scientific police.
What evidence has Stefanoni destroyed?
the clasp was stored in liquid and no one with knowledge of dna storage disagrees that it should have been stored in dry conditions and would be able to last for years. No there is not more dna to be tested on the bra clasp. Stefanoni destroyed the bra clasp (put it in liquid and it rusted). Yes it looks like they are claiming they have all the evidence.