Why are pink diamonds and other fancy-color diamonds rare, and what factors determine their value?

Why are pink diamonds and other fancy-color diamonds rare, and what factors determine their value?

• A. Pink diamonds are common and uniform.
• B. Fancy-color diamonds are rare due to low natural color occurrence and stable demand; color intensity, hue, saturation, and size determine pricing; treatments can affect value.
• C. Color determines value only by carat weight.
• D. Treatments always decrease value.

Answer: (B)