A COLLECTION OF SIX RINGS

A COLLECTION OF SIX RINGS, To include a 9ct yellow gold half eternity ring set with round single-cut diamonds, circa 1980, maker's mark, UK hallmark, size J; an oval-shaped blue gemstone halo ring, surrounded by round single-cut diamonds, to twisted shoulders, maker's mark, stamped '375', size K½; a geometrical design ring, set with a pave' of round brilliant-cut diamonds, to tapered shoulders, stamped '375', size L; an 18ct yellow gold monogrammed signet ring, circa 1854, maker's mark, UK hallmark, size L; an oval-shaped amethyst ring, bezel setting, tapered shoulders, undistinct marks, size J; a 9ct yellow and rose gold oval-shaped topaz ring, bezel setting and a rope-twist surround, to an open-work decorated mount with tapered shoulders, UK hallmark, size K; total gross weight approx. 16.5 grams (6)