Find 3 4 ct london blue topaz, 3 Stone Rings in Shopzilla's Jewellery & Watches category: Compare prices of 3 4 ct london blue topaz, 3 Stone Rings and buy your new 3 4 ct london blue topaz, 3 Stone Ring at a good price. When buying Rings, check how shoppers rated the different online shops. Simply select the store that has the Ring you're looking for. If a Jewellery & Watches store isn't rated yet it means that Shopzilla is still collecting shopper reviews.