Five diamond rings

Five diamond rings, including: a diamond solitaire ring, the old circular-cut diamond is set in platinum and gold. Size L 1/2. A diamond half hoop ring, the central panel set with two lines of circular-cut diamonds with gold borders. Size O 1/2. A diamond five stone ring set in yellow gold. Size O 1/2. A diamond seven stone ring, set in white gold. Size M 1/2. A diamond half hoop ring, set with two lines of circular-cut diamonds in white gold. Size U.