A selection of outstanding diamond rings, natural pearls and signed pieces are among the highlights of Bonhams' Fine Jewellery Sale on December 8 in London.
Investment-minded collectors will fight over jewellery from the 15th century to the present day.
The top lot is an internally flawless, marquise-cut D colour diamond ring. Weighing 9.22 carats, it is estimated to sell for £500,000 - £700,000.
Estimated at £150,000 - £200,000, a cut-cornered step-cut diamond ring, weighing 9.06 carats, will also feature.
The largest diamond in the sale, a brilliant-cut diamond ring weighing 24.47 carats, is estimated to make £170,000 - £220,000.
The sale will also offer a selection of natural pearls, which are increasingly sought after on the international market.
A pair of rare natural pearl and diamond pendent earrings are estimated to sell for £40,000 - £60,000. The large pearl drops (12.95mm and 11.05mm) are suspended from a brilliant, single and baguette cut mount.
A further highlight is a natural pearl and diamond pendent and pair of earrings, all capped by rose-cut diamonds and a brilliant diamond surmount. They are estimated to sell for £12,000 - £18,000.
There has been an increased demand for signed pieces by celebrated jewellery houses of late.
The sale will feature an art deco diamond bracelet by Lacloche Fréres, circa 1930, that is estimated to sell for £12,000 - £18,000.
Jean Ghika, the director of Bonhams' jewellery department, comments: "The exquisite examples of craftsmanship and design, as well as a selection of top quality diamonds, natural pearls and signed pieces have already led to a huge amount of interest at a global level."