There are many. Amoung them would be Columbian Emeralds, Little Switzerland (two
locations downtown and several satalite locations at hotels), Boulchands, Diamonds International (I believe they are still there). There are many many others.
We got fantastic deals at Touch of Gold. The adress is Havenstraat 32 D. It is one street behind the main street......on the corner.......they are very professional & will do just about anything you want. Hope you have a grand time & get to visit the shop.
There were a great many people from our cruise at Kays. I was told that was the place to go and it was packed. I did find something of course and I also went to Shiva's( not as crowded and I thought prices were good)