Tiffany of course. Mine is a Tiffany... and Tiffany has its own lab and issue certs for its own diamonds. Tiffany is internationally known for its diamond so it's good.
However... for a D grade VVS1... HK$20,000 I don't think u can get any good size... A Tiffany setting ring with a diamond of 1.02 ct, G grade, VS1, costs more than CND$17,000 which is about HK$120,000... o well... it is expensive to buy things in Canada plus we have to pay taxes... so with your budget, I really don't know what size you will get for grade D (the highest colour) and VVS1 (really nice clarity) at Tiffany... go visit the store, they have private section to help you choose your ring.
2007-08-27 02:51:45 補充:
For the one below: it's 6, not 8... that's Tiffany classic setting (the one I am getting). Typically it's only 4... and 8ct is just too much... it's 1ctAnd for the one above: Tiffany is famous for it's diamond so it's quality is world-class, no doubt about it.