Cheap but high-quality loose diamond distributer for engaement rings?

loose diamonds
dally asked:


I’ve found the perfect engagement ring but would like to find a loose diamond from a place that comes highly recommended.

http://www.tacori.com/mm5/merchant.mvc?Screen=SRCH&Product_Code=HT2299&Category_Code=ENGAGEMENT&Store_Code=TACORI&Search=A&offset=35&filter_cat=4&PowerSearch_Begin_Only=&sort=&range_low=&range_high=%20&srch_srcha=1

Also, my boyfriend’s grandmother gave him a nice diamond solitaire ring to use but it is too small for the ring I like. It was such a sweet gesture and he really wants to use it in some way. The setting comes with the tiny diamonds but the center stone is a CZ. Any ideas?