Can Sapphire Cut Glass? Sapphire is one of the most durable gemstones used for jewelry, second to only diamonds. It has a hardness rating of 9 on the Mohs scale. This means that any substance with an equal or lower hardness rating cannot scratch a sapphire. Glass is only 5.5, spinel is 7.5-8 and cubic
What Is The Best Watch Crystal? Sapphire crystal is the most durable and best quality watch crystal available today. It’s the most scratch resistant. However, it’s also the most expensive type of watch crystal. What is the difference between sapphire crystal and mineral crystal? Mineral crystal is break resistant but scratches relatively easily; whereas sapphire