of open tram-track design collet set with six graduated circular cut diamonds spaced by oval cabochon rubies, between two lines of diamond collet chains, mounted in platinum and 14ct yellow gold, signed 'Koch' and 585 Lengths 18cm / 7'' and 16.5cm / 6�'' Weight: 37.5g
Early 20th century ruby and diamond line bracelet by Boucheron, Paris c.1915, alternating trios of French cut diamonds and rectangular cut Burma rubies,
Late 19th century ruby and diamond line bracelet, c.1890, formerly belonging to the Royal House of the Bourbon Parma family, with eight graduated cushion cut Burma rubies alternating seven old round brilliant and cushion cut diamonds,
Gold, cabochon emerald, sapphire and diamond Indianesque bangle by Cartier, Paris, the upper section in the form of a bold gold leaf cap studded with a line of nine graduated sugarloaf and round cabochon emeralds,
Late 18th and early 19th century foiled amethyst suite, c.1800, comprising a necklace with cross pendant, a pair of bracelets, a pair of pendant earrings and a coronet shaped brooch,