Jewellery, Watches and Objects of Vertu to include the personal archive of Louis Osman, goldsmith and architect

A 19th century ‘harlequin’ multi-gemstone eternity ring, the band composed of open backed pinched collet set oval cabochon gemstones including ruby, moonstone, sapphire, cat’s eye chrysoberyl, turquoise, garnet and emerald together with a half pearl (damaged) and a rose-cut diamond, mounted in yellow gold, ring size K½. £500-700