What are the approximate carat weights of the Cullinan I and Cullinan II stones?

• A. 900 ct and 600 ct.
• B. 530.4 ct and 317.4 ct.
• C. 300 ct and 200 ct.
• D. 120 ct and 80 ct.

Answer: (B)

Carat weight is the mass measurement used for diamonds, and the Cullinan stones are famous for being among the largest cut diamonds. The biggest cut piece from the Cullinan diamond is Cullinan I, known as the Great Star of Africa, weighing about 530.4 carats. The second-largest cut piece, Cullinan II or the Second Star of Africa, weighs about 317.4 carats. These precise figures are well established when describing the scale of these iconic stones, and they illustrate how mass translates into value and presence in jewelry and royal insignia. The other options fall far from these well-known sizes, which is why the pair of weights around 530.4 and 317.4 carats is the correct match.