The Oppenheimer Blue. A 14.62 ct fancy vivid blue rectangular-cut diamond. Price realised CHF 56,837,000 (USD 58,002,681) at Christie's Geneva, 18 May 2016, lot 242. WORLD AUCTION RECORD FOR ANY JEWEL. Photo Christie's Image Ltd 2016.

The Cullinan Dream. A magnificent 24.18 carats cut-cornered rectangular mixed-cut fancy intense blue, natural color, VS2 clarity  diamond ring. Price realised USD 25,365,000 at Christie's New York, 9 June 2016, lot 261. Photo Christie's Image Ltd 2016 

A rare 9.14 carats, VS2 clarity fancy vivid pink pear-shaped diamond. Price realised CHF 18,127,500 (USD 18,259,176) at Christie's Geneva, 15 November 2016, lot 216. Photo Christie's Image Ltd 2016

Miroir de l'Amour, a sensational pair of 52.55 and 50.47 carats, D colour, Flawless clarity Type IIA diamond earrings, by Boehmer et Bassenge. Price realised CHF 17,567,500 (USD 17,695,109) at Christie's Geneva, 15 November 2016, lot 188. Photo Christie's Image Ltd 2016

The Jubilee Ruby. An oval-shaped ruby, weighing approximately 15.99 carats, signed Verdura. Price realised USD 14,165,000 at Christie's New York, 20 April 2016, lot 255. Photo Christie's Image Ltd 2016

A superb 4.29 carats marquise-cut fancy vivid blue diamond and diamond ring, by Moussaieff. Price realised HKD 91,260,000 (USD 11,818,873) at Christie's Hong Kong, 29 November 2016, lot 2079. Photo Christie's Image Ltd 2016

The Oriental Sunrise. A unique and rare pair of diamond and 12.20 and 11.96 carats fancy vivid orange-yellow oval-cut diamond earrings. Price realised CHF 11,365,000 (USD 11,598,087) at Christie's Geneva, 18 May 2016, lot 224. Photo Christie's Image Ltd 2016

A superb 10.05 carats Burma “Pigeon Blood” oval-shaped ruby and diamond ring, by Faidee. Price realised HKD 78,940,000 (USD 10,223,338) at Christie's Hong Kong, 29 November 2016, lot 2087. Photo Christie's Image Ltd 2016

A rare 10.07 carats Type IIa cushion modified brilliant-cut fancy intense purple-pink diamond and diamond ring. Price realised USD 8,845,000 at Christie's New York, 20 April 2016, lot 244. Photo Christie's Image Ltd 2016

An impressive fringe diamond necklace, by Harry Winston. Price realised CHF 8,327,500 (USD 8,387,990) at Christie's Geneva, 15 November 2016, lot 223. Photo Christie's Image Ltd 2016

Le Jardin d'Isabelle, an exquisite D colour, Flawless clarity Type IIA diamond and coloured diamond necklace, by Boehmer et Bassenge. Price realised CHF 8,047,500 (USD 8,105,956) at Christie's Geneva, 15 November 2016, lot 187. Photo Christie's Image Ltd 2016 

A superb 40.43 carats Type IIa round brilliant-cut diamond. Price realised USD 7,221,000 at Christie's New York, 20 April 2016, lot 234. Photo Christie's Image Ltd 2016

An important 54.62 carats round-cornered rectangular modified brilliant-cut fancy vivid yellow diamond ring. Price realised USD 7,221,000 at Christie's New York, 20 April 2016, lot 126. Photo Christie's Image Ltd 2016.

A pair of intense blue and pink diamond ear pendants. Price Realised CHF 5,877,000 (USD 5,997,533) at Christie's Geneva, 18 May 2016, lot 234. Photo Christie's Image Ltd 2016

A magnificent Type IIa diamond ring of 51.35 carats, D color, VVS1 clarity, potentially Internally Flawless. Price realised USD 5,567,500 at Christie's New York, 20 April 2016, lot 318. Photo Christie's Image Ltd 2016. 

A rare pair of diamond and 3.02 and 2.50 carats fancy intense blue rectangular-cut diamond earrings. Price realised CHF 4,757,000 (USD 4,854,562) at Christie's Geneva, 18 May 2016, lot 196. Photo Christie's Image Ltd 2016

Property of H.S.H. Gabriela Princess Zu Leiningen. The Pohl Diamond. An exceptional diamond ring, by Cartier. A rectangular-cut D, VVS1, potentially Internally Flawless diamond or approximately 36.09 carats, mounted by Cartier. Price realised CHF 4,309,000 (USD 4,397,374) at Christie's Geneva, 18 May 2016, lot 346. Photo Christie's Image Ltd 2016

An elegant 32.33 carats, D colour, VVS1 clarity Type IIa rectangular cut-cornered diamond ring, by Bulgari. Price realised CHF 4,351,500 (USD 4,383,109) at Christie's Geneva, 15 November 2016, lot 115. Photo Christie's Image Ltd 2016

A sensational 75.41 carats cushion-cut Burma "royal blue" sapphire ring. Price realised USD 3,831,500 at Christie's New York, 20 April 2016, lot 294. Photo Christie's Image Ltd 2016. 

An important two-strand jadeite necklace. Price realised HKD 26,300,000 (USD 3,406,053) at Christie's Hong Kong, 29 November 2016, lot 2011. Photo Christie's Image Ltd 2016