These shark teeth are genuine and can date back to 65 million years. Each one is different in pattern and color and may contain small chips or breaks. These shark teeth are a perfect addition to anyone's collection pieces or the perfect gift for someone that collects fossils. Our shark tooth necklaces for boys are a perfect gift for any child, once they find out the possible age of the tooth their smiles are sure to grow. Our shark tooth necklaces are perfect for kids, women, and men. Please note that these shark teeth are selected randomly and may vary in size, some may be bigger or smaller.