Friday, 22 April 2022

De Beers Cullinan Blue = $57.5m

Sotheby’s Hong Kong auctioned the largest and most valuable blue diamond ever - the 15.1 carat, internally flawless, fancy vivid step-cut De Beers Cullinan Blue. The 39.35 carat rough stone was discovered by Petra Diamonds in South Africa’s Cullinan mine in April 2021. The diamond has a value “in excess of $45 million.” There have been only five blue diamonds over 10 carats ever to appear at auction, and, until now, none of them has topped 15 carats.
The most expensive blue diamond sold at auction previously was the 14.63 carat Oppenheimer Blue, sold at Christie’s Geneva in 2016 for £44 million.
Petra Diamonds (LON:PDL) 39.34 carat Type IIb gem recovered at its Cullinan mine in April was sold to De Beers and manufacturer Diacore for $40.2 million. Petra’s Blue Moon of Josephine diamond, cut from a 29.6-carat rough blue diamond, sold for $48.5 million in 2015. The price of $4 million per carat remains the world record. The Blue Moon of Josephine lost about 59% of its mass during cutting. If the same holds for the 39.34-carat blue diamond, the result would be a 16-plus-carat gem. At $4m per carat, the polished stone would be worth $64m.

Diamonds get their natural blue color from small amounts of boron trapped in the crystal carbon structure during its formation.

Sunday, 17 April 2022

Fuchsia Rose brings $6.7m

The Fuchsia Rose features a 8.82-carat purple-pink diamond at the center, flanked by two white diamonds of 6.1 carats. It was the leader at Christies, selling for $6.7 million, above it's high estimate. Once owned by a member of the Rockefeller family, a deep royal blue Burmese sapphire fetched $478k, far exceeding its high estimate of $150k.

Saturday, 16 April 2022

Chaumet Fine Jewels

Marie-Étienne Nitot (1750-1809) settled in Paris in 1780 after having served his apprenticeship at Auber, then jeweller to Queen Marie-Antoinette. His aristocratic clientele remained loyal to him until the French Revolution in 1789.
He later became the official jeweller of Napoleon in 1802. Nitot created the jewellery that would offer the French Empire it's splendour and power. He designed and set Napoleon’s coronation crown, the hilt of his sword as well as many other pieces.

François Regnault Nitot took over his father’s jewellery House on his death in 1809 and continued until the fall of the Empire in 1815. Napoleon’s exile caused Nitot to sell the business.

French Tiara given to Josephine by Napoleon.
Chaumet was bought in October 1999 by LVMH. After an unsuccessful attempt to penetrate the American market in the end of the 1990s, the company opened stores in Asia to fuel growth. Chaumet is now part of the watch and jewellery brands that includes TAG Heuer, Zenith, Fred, Hublot, Montres Christian Dior, and De Beers Diamond Jewellers.

Friday, 15 April 2022

Empress Joséphine Bonaparte's tiaras - $765k

Tiaras owned by Joséphine Bonaparte, the first wife of French Emperor Napoleon, went on sale after 150 years in private hands. Combined, they were expected to fetch up to £500,000 ($680k) at Sotheby's
Napoleon's lovelorn letters to Joséphine are renowned for their passion. She has been depicted as a clever seductress who ultimately relinquished her marriage when she and the emperor were unable to produce an heir.

Thursday, 14 April 2022

Red Cross Diamond up for grabs

The Red Cross Diamond is part of Christies Magnificent Jewels sale next month in Geneva.
The 205.07 carat fancy yellow Red Cross Diamond was cut from a rough stone of 375 carats found in De Beers South African mine in 1901. The cushion-shaped diamond is one of the largest in the world and is famous for its pavilion, which is faceted in the shape of a Maltese cross. Estimate is $7.5m to $10.7m.

Wednesday, 13 April 2022

Paraiba tourmaline giving shine to high end watches


Hublot’s Big Bang Paraiba is set with up to 224 paraiba tourmalines. Prices range between $232k and $274k.
Paraiba is perfect for watches because it retains some of its sizzle even when set flush. Compared to the prong setting of a ring, setting a gem into metal blocks light from entering the pavilion and out through the top, which can make diamonds look dull. Paraiba is the exception to this drawback. Watches set with the gem retain a glow.
See ----->Paraiba tourmaline - World's most desirable Gemstone