This luminous Chalcedony necklace is infused with love and celebration and the perfect way to say "Happy Birthday!" Additionally Chalcedony infuses the heart, mind, and soul with positivity. 9 x 12 millimeter faceted gemstone 16" long with a sterling silver extender allowing it to be worn up to 18" Sterling silver lobster clasp Mighty Miracle nylon cord FSC certified card Woman-owned and operated in Asheville, NC since 2011, SoulKu offers genuine gemstone jewelry handmade by our team of mama makers. The perfect gift for birthdays, Valentine’s Day, Easter, Mother’s Day, Holidays, and more—stock up on SoulKu this season!