A fossilised mako sharks tooth from Morocco encased in recycled sterling silver and hanging on an 18 inch sterling silver snake chain. The most common fossilised sharks teeth date from around 65 million years ago. Sharks can shed many thousands of teeth throughout their lifetime. In order for the teeth to fossilise, they must sink the seafloor and quickly become covered by sediment. The fossilisation process is a slow one that usually takes thousands of years. It occurs as water seeps through the sediments and over the teeth. This water carries different minerals in it that are deposited into open pore spaces in the teeth. The most common minerals are silica and calcite. Depending on which minerals are present teeth can be found in a wide variety of different colors. It’s important to note that this tooth is therefore not a byproduct of the modern and very detrimental shark trade. Please be sure to make people aware that by wearing this necklace you are not supporting this trade as they are very different sources but easily confused! For shark lovers who want to show their admiration for these beautiful and threatened species.