Swarovski Article 4439, Square Stone 20mm Clear Unfoiled . Within the Swarovski coding group, article starting with a ô4ö are generally made to fit into settings. These stones are often copies of cut gemstones and hence have more often than not a pointy back. You will not be able to glue these onto fabric. However, for many of these we do have settings, which can be found in the main category...