Friday, 31 July 2020

115 carat diamond leads at Christies New York

Top lot at Christie’s Magnificent Jewels sale was a 115.8-carat pear-shaped, F color, VVS1 diamond on a diamond necklace. It sold for $6.29m.
Anna Hu's "Sky Tower" jadeite necklace was withdrawn from the auction. Its estimate was $1m to $1.5m.
Number two lot was a 7.16-carat IF, fancy intense blue, pear modified brilliant-cut diamond on a platinum ring that made $3.85m.

The Patiala Necklace

De Beers Consolidated Mines Limited produced a 428 carat light yellow octahedral diamond in March 1888. With a finished weight of 234.65 carats, the cushion cut "De Beers" is the seventh largest faceted diamond in the world.

The Maharaja, Bhupinder Singh, of Patiala in the Punjab region of India, bought the gemstone in 1889. In 1925, the Maharaja commissioned Cartier to set the De Beers diamond as the centerpiece of a ceremonial necklace that became known as the Patiala Necklace. In its original form, the necklace was 962 carats contained in 2,930 diamonds and other precious stones. It was completed in 1928 and is one of the most spectactular and expensive pieces of jewellery ever made.
The last sighting of the complete necklace was in 1946 when it was worn by the son of Maharaja Bhupinder Singh, Maharaja Yadavinder Singh. Fifty two years later the necklace was discovered in a second-hand jewellery shop in London by a Cartier representative. All the big stones in the necklace, which included the De Beers diamond and the seven other big diamonds ranging from 18 to 73 carats, and the rubies had all been disposed of. The remnants of the Patiala Necklace was bought by Cartier. It took four years to restore the necklace to it's former glory.

On May 6th, 1982 the 'De Beers' diamond came up for auction at Sotheby's in Geneva. The top bid of $3.16 million remained below the undisclosed reserve price.

The necklace was displayed by Cartier across the world to rave reviews. The New York Times wrote gushingly “The crowds are lining up in front of Cartier on Fifth Avenue and 52nd Street, but they are not your average New York Christmas shoppers.

They are passers-by staring, aghast, at a fabulous piece of antique jewelry. It’s not even for sale. Nor was it made to satisfy a beautiful woman. It is an ornament made to adorn the chest of a man”.

Wednesday, 29 July 2020

Top Diamonds at auction 2014

The Ocean Dream – a 5.50-carat Fancy Vivid Blue-Green diamond sold for $8,633,798, or $1,569,781 per carat.

In May, Sotheby’s Geneva sold the Graff Yellow, a 100.09-carat Fancy Vivid yellow diamond set in a ring by Graff, for a record $16.3 million – the highest ever for a yellow diamond at auction.
In May at Christie’s Geneva, the Winston Blue, a 13.22-carat Flawless Fancy Vivid Blue diamond, sold for $23.7 million, setting a world auction record for price per carat for a blue diamond at $1,799,953 per carat.

That record was broken by Mrs. Paul Mellon’s 9.75-carat Fancy Vivid Blue diamond, renamed the Zoe Diamond by its new owner sold for $32,645,000, or $3,348,205 per carat at Sotheby’s in November. The most expensive jewel to sell in 2014, the Zoe diamond also set a new world auction record for any blue diamond and a new world auction record for price-per-carat for any diamond.
At Sotheby’s Hong Kong Magnificent Jewels sale in October, a 8.41-carat Fancy Vivid Pink diamond sold for nearly $17.8 million, setting a new world auction record for a Fancy Vivid pink.

A 75.97-carat pear-shaped D Flawless diamond sold at Christie’s Geneva for nearly $14.5 million.
A 70.33-carat Cushion Brilliant-Cut Diamond – $14,201,234.

A 89.23-carat Pear-Shaped Diamond – $11,085,000
A Belle Époque Diamond Devant-de-Corsage Brooch, by Cartier – $17,581,612

Pair of Fancy Vivid blue & Fancy Vivid pink diamond earrings, by Bvlgari – $15,820,731

Friday, 24 July 2020

Yowah Opal

Yowah is a small town in outback western Queensland, Australia. Yowah is located 938 kilometres west of Brisbane and 132 kilometres west of Cunnamulla. The 2006 census revealed a population of 142.

The town is famous for its opal mining and numerous opal fields that lie around the town as well as the "Yowah Nut" a local type of opal distinctive to the region. The area was first leased in 1883 to settlers and opal mining has been the main activity ever since.
The Yowah field is an occurrence of opal in siliceous ironstone nodules, referred to as Yowah Nuts. These nuts have a spherical or ellipsoidal shape, and show alternate bands of light and dark brown siliceous ironstone. Sometimes a kernel of precious opal occurs, which is the source of the gem. The nuts are found in layers at depths up to 20m in a ferruginous sandstone.

Wednesday, 22 July 2020

Jewels shine at Christie's Geneva

A fancy blue and white diamond ring by Reza sold for $9.2m against a $8.5m to $12.8m estimate The first diamond is an internally flawless 5.34-carat fancy vivid blue modified brilliant-cut diamond. The second is a 5.37-carat D color, internally flawless Type IIa colorless diamond.

Number two lot was a D-color 100.85-carat diamond with a modified shield mixed-cut. It sold for $5.9m.
A 104.04-carat internally flawless, fancy intense yellow modified pear-shaped, brilliant-cut diamond made $2.5m.

Top fancy colored gem at the sale was a 29.54-carat octagonal step-cut Colombian emerald, with minor oil treatment, flanked by tapered baguette-cut diamonds. It fetched $1.8m.

Purple pyrope-almandine garnets

In early 2016 purple garnets from East Africa started to appear. The source was Manica Province in central Mozambique. The deposit is located 60 km northeast of Chimoio, near Gorongosa National Park. The area is under the control of the Mozambican National Resistance (RENAMO), an armed rebel group.
What's special about these garnets is the color - an intense purple with red flashes that is called Royal Purple. The Mozambique material has strong color with extreme brilliance.

If this wasn't enough, the garnets also display a color change, from grape under daylight to cranberry with magenta flashes under incandescent lighting.

The government of Mozambique has now closed the area to mining making further supply uncertain.
The material with the best color is found in smaller sizes, under 3-4 carats. Since the color saturation is so intense, larger stones are too dark. The highest grade material has come from the Mozambique deposit, with some stones coming from Tanzania. Both display the distinctive color change.

Tuesday, 21 July 2020

Dior High Jewellery

Christian Dior, (21 January 1905 – 24 October 1957) was a French fashion designer, best known as the founder of one of the world's top fashion houses, which is now owned by Groupe Arnault.

Bernard Jean Étienne Arnault is a French business magnate, Chairman and Chief Executive Officer of LVMH, the world's largest luxury goods company. He is the richest person in France, and the 8th richest person in the world according to Forbes. In 2017, his net worth was estimated to be US$51.7b.