A collection of early 20th century bar brooches and a signet ring

A collection of early 20th century bar brooches and a signet ring, comprising: a brooch centred with a sapphire cabochon between two diamonds in platinum and yellow gold, width 6.4cm, case; a brooch centred with a diamond cluster in platinum and gold, width 6.4cm; a white gold brooch with a row of seed pearls centring on a diamond, width 4.6cm; a yellow gold bar brooch centred with a turquoise cabochon, width 3.8cm; and a 9ct gold initialled signet ring, British hallmarks, size M 1/2, 5g