Swarovski uses the terminology "Stone Size" (ss) to measure various stones, such as Round Stones and Flatback sizes. Please take note that the Stone Size Chart below includes many more sizes than are produced in any one particular item and serves as a sizing chart for all kinds of Swarovski crystal products. Swarovski produces it's popular 2028 and 2058 Flatbacks in the following sizes:
5ss, 6ss, 7ss, 8ss, 9ss, 10ss, 12ss, 14ss, 16ss, 20ss, 30ss, 34ss, 40ss, and 48ss
Please note that the actual size on your computer screen will depend in part on the size and resolution of your monitor.