What is a key requirement for diamonds that have undergone color alteration?

• A. Must be disclosed on certificates and to buyers.
• B. They must be priced higher regardless.
• C. They cannot be used in jewelry.
• D. They do not require disclosure.

Answer: (A)

Color alteration in diamonds introduces a transparency requirement: buyers must be informed about any treatment. The industry and certifying bodies require that any color-enhancing treatment be disclosed on the grading certificate and in all communications to buyers. This ensures you understand what you’re buying and helps prevent misrepresentation, since treated stones can differ in value, durability, or provenance compared with untreated ones.

Pricing isn’t guaranteed to be higher just because a diamond has been color-altered; value depends on the specific treatment, its permanence, and market demand. Treated diamonds are routinely used in jewelry, and disclosure isn’t optional—omitting it would mislead buyers and is not acceptable practice.