Diamonds are differentiated between various types, Ia, Ib, IIa, and IIb. Although this information is important to the diamond cutter, it is of no value to the student Statistics · Occurrences · History & Mining · Industry & Technology. We bet you've never heard these cool facts about diamonds before. As a GIA Graduate Gemologist, I enjoy these tidbits of information to. Learn about what a diamond is, what makes diamonds special and how a diamond is manufactured. Clarity is graded on the size and visibility of the flaw s and inclusion s. In Januarythe FTC ruled that laser drilling of diamond must also be disclosed. Image taken from a former site at adiamondisforever. Please note that the full Brilliant Earth collection may not be available for view at each location. Diamonds sold through this process are known as conflict diamonds or blood diamonds.