A pair of diamond pendent earrings, Portuguese, 18th century. Estimate £4,000 - 6,000 (€5,500 - 8,300). Photo Bonhams.

The graduated series of openwork scrolling, bow and quatrefoil plaques, decorated with table-cut diamonds, closed-back settings throughout, two diamonds deficient, later earring fittings, length 7.2cm

Note: For a similar example see "Five Centuries of Jewellery", National Museum of Art, Lisbon, London, 1995, ill.no.79.

Bonhams. JEWELLERY, 13 May 2015 11:00 BST - LONDON, KNIGHTSBRIDGE