I am always amazed at the beautiful rivolis available on eBay (and heaven knows, I have spent a small fortune on them). Beading in the Rain constantly wows me. They always have some great auctions going but their "Buy It Now" selection is also worth a long look.
In addition, Beading in the Rain is one of the few shops where you can buy Swarovksi rivolis with special coatings. I just received some 12mm Mystic Shimmer rivolis that I won in an auction and the picture just does not do them justice because they are so beautiful:
I have also purchased Beading in the Rain's Water Lily, Peacock, Mystic Crystal and Glacier Blue rivolis—all equally lovely, especially the Peacock rivolis because they are so unique: