Speckled Shell Niobium Bracelet, 8 inch November 12, 2012November 13, 2012 Naturally Nickel Free 0 Comment on Speckled Shell Niobium Bracelet, 8 inch Brown shell bracelet with handmade niobium chain, Nickel Free. 8 inches (20 cm) in length. read more Niobium Shell Bracelet Handmade BraceletHypoallergenicjewelryNickel FreeNiobiumNo NickelSensitive Skinshell