The markings on the Vatican part are 900, Pt, 0.10, and 0.73 on the back of the design. It is a platinum 900 frame with a 0.73 carat ruby and 0.1 carat diamond decoration. Weight: Approximately 1.44 grams Originally, a dark blue sapphire was in the center, but I requested a stone replacement and had an unused ruby set. The ruby is a slightly purplish pink. ※The necklace is for display purposes. It is not included.