Price listed is for 8 preset stones. These are smoked topaz acrylic faceted round rhinestones that are preset in silver cinch mount settings. The stone has a faceted top and back, and measures about 14mm. The setting measures about 20mm by 15mm, including the loops at the top and bottom. The inside of the loops measure about 1.3mm. You should be able to open the setting and replace the stone should you want to. However, the settings were not meant to be opened and closed again and again, and doing so may result in damage to the setting. Some of the stones may be a little rough.