Nature Seashell Pendant-Genuine Ribbed Cantharus Shell with Gold Wrapping Necklace Pendant- 40-47mm ( 1 pendant) Material: Natural Shell, 24K Gold wrapped Shape: Ribben Cantharus shell, shaded Measurement: Approximately 40-47mm long by 25-28 mm wide, 15-18mm thick Weight: about 4-6 grams per piece. *As these are natural shells shape, sizes and shades vary.