Abalone Jewelry Shell Stretchy Bangle Bracelet | Old Luxe In shades of red tones, dyed abalone shell premium quality elastic stretchy bracelet. Measuring approximately 3 inches long. The shell of the abalone is known for being exceptionally strong. It is made of microscopic calcium carbonate tiles stacked like bricks. Between the layers of tiles is a sticky protein substance. When the abalone shell is struck, the tiles slide instead of shattering and the protein stretches to absorb the energy of the blow. Interesting. Free shipping on this stretchy bracelet to USA, UK, Australia and Canada. Thank you for visiting Old Luxe. Abalone Jewelry Shell Stretchy Bangle Bracelet | Old Luxe