Lead Crystal Cut

Lead Crystal Cut
Does anyone know how to fix a very large lead crystal bowl?

My mom has a large lead crystal bowl and a piece about two inches long got broke off of the base. It is a punchbowl on a connected pedestal. We had it repaired at the glass place but it came apart again. The bowl is brilliant cut crystal and is very beautiful. It is also very heavy!!!!

i presume that the best method would be to have a professional with a diamond tipped drill bit, drill holes in each piece, then utilize special glue and sink clear plastic pins into these holes and that would suffice