- Water is the origin of life and the shell is always a keepsake. This "tourelle" shell is an almost extinct species and a reminder of the simple and pure beauty of everything nature creates for us. - Available in Bronze or Sterling Silver. Also available in Yellow Gold, White Gold or Rose Gold (price upon request). Please email requests to orders@catherinemichiels.com with the item name, material, stones (if any) and quantity desired.   - Your charm will be shipped on a silk tie in one of the colors from the current season's palette. If you have a specific color preference, please write us a note at checkout. 5/8" - 16mm