All Shellrus Sapphire products are 99.99% pure synthetic sapphire. Plus, our sapphire products have scratch protection of 9 on the Mohs scale of hardness, which means glass, keys, rocks, sand, and most other items that can scratch your phone's screen won't scratch your Shellrus Sapphire screen or camera lens protector. Because the material's unique scratch resistance does not necessarily prevent cracks and other breakages. This is because as gemstones increase in Mohs hardness, they become more scratch-resistant, but also more brittle. For example, diamonds have a Mohs hardness of 10, but they are more brittle than sapphires. In other words, your Sapphire product is more scratch-resistant than any other currently available smartphone accessory, but they - like all screen and lens protectors - are susceptible to damage from drops and impacts. Thankfully, your sapphire items can still withstand many drops and bumps, but it is highly recommended that you use a sapphire protector in conjunction with your phone case. Combined with a good case, there's no better way to protect your smartphone.