Two rings and a fob seal, late 19th/early 20th century

Two rings and a fob seal, late 19th/early 20th century, comprising: a ring of cross-shaped cluster design, set with half pearls and cushion-shaped diamonds, mounted in gold, size F1/2, stamped 18CT PLAT; a diamond ring set with five graduated cushion-shaped diamonds, mounted in gold, size N, British hallmark for 18ct gold, date letter for 1903; and a swivel fob seal, modelled as a scarab, set with a banded onyx intaglio carved with the initials LB, intaglio measuring 1.5 x 1.0cm, and a pair of pearl shirt studs in a leather case