Under magnification, diamonds with a clarity grade of I2 show visible flaws and imperfections. Some of these inclusions might even be seen with the naked eye. This diamond grade may be less dazzling than its perfect siblings. The lowest recommended clarity for exquisite jewelry is I1. In general, if you can't see all six sides of a diamond, it's not graded as clear. I diamonds are suitable for use as jewelry stones. They tend to be slightly darker in color and have lower price tags than other diamonds. Although they aren't as bright or flawless as a VVS1 or VS1, they can still be very beautiful gems. There are two types of I diamonds: natural and treated. Natural I diamonds come from mines in India, Australia, and Canada and are considered the lowest quality of diamond. They are dark colored, have structural defects, and often have impurities such as sulfur. Treated I diamonds receive some type of treatment to improve their appearance and durability. These treatments include chemical cleaning, laser cutting, and carat weight reduction. Even though these diamonds have been treated they may not be acceptable for use in medical equipment due to the chemicals used during the process. It's easy to see why diamonds with little inclusions go for less money - they're prettier and carry more fire. However, diamonds that are completely clear can be harder to find and more expensive.