Petra puts “exceptional” 39-carat blue diamond up for sale

    39.34 carat blue diamond recovered by Petra                                         South Africa

South Africa’s Petra Diamonds has put a 39.34 carat Type IIb gem recovered at its iconic Cullinan mine in April up for sale, with viewings beginning June 15.

The company said the diamond of “exceptional quality” in terms of both its colour and clarity, will be showcased in Antwerp, Dubai, Hong Kong and New York.

Petra, which anticipates that the diamond will be sold via a special tender, said that biddings via its online platform will close on July 12.

While it didn’t set a price range for the stone, the miner said high-quality blue diamonds like the one for sale usually fetch the highest values.

Petra’s Blue Moon of Josephine diamond, cut from a 29 carat rough blue diamond, sold for $48.5 million in 2015.

The figure corresponds to a price of $4 million per carat, which remains the world record price per carat ever paid for a diamond.

Cullinan is known as the world’s most important source of blue diamonds, as well as being the birthplace of the 3,106-carat Cullinan diamond, which was cut to form the 530-carat Great Star of Africa. The operation also yielded the 317-carat Second Star of Africa. They are the two largest diamonds in the British Crown Jewels.

Source: DCLA

Petra puts “exceptional” 39-carat blue diamond up for sale

    39.34 carat blue diamond recovered by Petra                                         South Africa

South Africa’s Petra Diamonds has put a 39.34 carat Type IIb gem recovered at its iconic Cullinan mine in April up for sale, with viewings beginning June 15.

The company said the diamond of “exceptional quality” in terms of both its colour and clarity, will be showcased in Antwerp, Dubai, Hong Kong and New York.

Petra, which anticipates that the diamond will be sold via a special tender, said that biddings via its online platform will close on July 12.

While it didn’t set a price range for the stone, the miner said high-quality blue diamonds like the one for sale usually fetch the highest values.

Petra’s Blue Moon of Josephine diamond, cut from a 29 carat rough blue diamond, sold for $48.5 million in 2015.

The figure corresponds to a price of $4 million per carat, which remains the world record price per carat ever paid for a diamond.

Cullinan is known as the world’s most important source of blue diamonds, as well as being the birthplace of the 3,106-carat Cullinan diamond, which was cut to form the 530-carat Great Star of Africa. The operation also yielded the 317-carat Second Star of Africa. They are the two largest diamonds in the British Crown Jewels.

Source: DCLA

73ct. Yellow to Shine at Sotheby’s New York Sale

                            73.11 carat yellow diamond

Sotheby’s will offer a fancy-vivid-yellow diamond ring at its New York sale next month, estimating the piece could fetch up to $3 million.

The cut-cornered square step-cut, 73.11-carat, VS2-clarity jewel by Mayfair designer Glenn Spiro, called The Sienna Star, is one of the largest fancy-vivid-yellow diamonds to come to auction, Sotheby’s said Wednesday. The piece is one of the top items at the June 9 Magnificent Jewels sale. The auction will feature jewelry for the “Roaring Twenties 2.0” as people return to the social scene following long lockdowns, Sotheby’s noted.

A private collection of six jewels with a combined estimate of more than $13 million are another headline lot at the New York sale. Those include a necklace by Andrew Clunn, set with 28 oval-shaped diamonds totaling over 168 carats, which carries a high estimate of $3 million, and an emerald-cut, 23.59-carat, D-color, internally flawless, type IIa diamond ring with an upper valuation of $2.8 million.

A Colombian emerald and diamond garland necklace by Harry Winston, estimated at up to $2.5 million, and a 13.02-carat Burmese ruby ring, mounted by Carvin French, with a $2 million high valuation, are also part of the collection. Proceeds from the sale of those six items will be donated to charity.

Additionally, Sotheby’s will showcase a Bulgari ring with a 25.29-carat Kashmir sapphire flanked by diamonds, which it expects will bring in up to $3 million. Meanwhile, a modified square brilliant-cut, 3.75-carat, fancy-intense-pink, VVS1-clarity diamond ring, accented by triangle-shaped and round diamonds, is estimated to fetch up to $2.5 million.

The auction house will present jewels from the collection of philanthropist Margaret Jonsson Rogers, the daughter of Texas Instruments founder and Dallas mayor J. Erik Jonsson, as well as property from the estate of Mary Ethel Weinmann, the daughter of Count and Countess André de Limur, it added.

Source: DCLA

73ct. Yellow to Shine at Sotheby’s New York Sale

                            73.11 carat yellow diamond

Sotheby’s will offer a fancy-vivid-yellow diamond ring at its New York sale next month, estimating the piece could fetch up to $3 million.

The cut-cornered square step-cut, 73.11-carat, VS2-clarity jewel by Mayfair designer Glenn Spiro, called The Sienna Star, is one of the largest fancy-vivid-yellow diamonds to come to auction, Sotheby’s said Wednesday. The piece is one of the top items at the June 9 Magnificent Jewels sale. The auction will feature jewelry for the “Roaring Twenties 2.0” as people return to the social scene following long lockdowns, Sotheby’s noted.

A private collection of six jewels with a combined estimate of more than $13 million are another headline lot at the New York sale. Those include a necklace by Andrew Clunn, set with 28 oval-shaped diamonds totaling over 168 carats, which carries a high estimate of $3 million, and an emerald-cut, 23.59-carat, D-color, internally flawless, type IIa diamond ring with an upper valuation of $2.8 million.

A Colombian emerald and diamond garland necklace by Harry Winston, estimated at up to $2.5 million, and a 13.02-carat Burmese ruby ring, mounted by Carvin French, with a $2 million high valuation, are also part of the collection. Proceeds from the sale of those six items will be donated to charity.

Additionally, Sotheby’s will showcase a Bulgari ring with a 25.29-carat Kashmir sapphire flanked by diamonds, which it expects will bring in up to $3 million. Meanwhile, a modified square brilliant-cut, 3.75-carat, fancy-intense-pink, VVS1-clarity diamond ring, accented by triangle-shaped and round diamonds, is estimated to fetch up to $2.5 million.

The auction house will present jewels from the collection of philanthropist Margaret Jonsson Rogers, the daughter of Texas Instruments founder and Dallas mayor J. Erik Jonsson, as well as property from the estate of Mary Ethel Weinmann, the daughter of Count and Countess André de Limur, it added.

Source: DCLA

Sarine Partners with Cutting Firm on Lab-Grown

                  The Sarine Loupe technology

Sarine Technologies has entered into a collaboration with diamond-industry consultancy Constell Group that will focus on improving efficiency for the lab-grown supply chain.

“The application of Sarine’s advanced technological solutions to many of the currently manual processes will increase the realized value significantly, and we are fully committed to bringing this evolution to the burgeoning lab-grown diamond market,” Meir Boukris, Constell’s executive chairman, said Tuesday.

Constell offers services such as sorting of rough stones and polishing, concentrating on aiding the transformation of raw materials into finished stones in the most cost-effective way, it said. The group, founded in India, employs more than 4,000 people worldwide.

Sarine, an Israel-based supplier of diamond-manufacturing and grading equipment, will receive remuneration based on each stone processed, regardless of the specific technologies the company uses.

Source: Diamonds.net

Sarine Partners with Cutting Firm on Lab-Grown

                  The Sarine Loupe technology

Sarine Technologies has entered into a collaboration with diamond-industry consultancy Constell Group that will focus on improving efficiency for the lab-grown supply chain.

“The application of Sarine’s advanced technological solutions to many of the currently manual processes will increase the realized value significantly, and we are fully committed to bringing this evolution to the burgeoning lab-grown diamond market,” Meir Boukris, Constell’s executive chairman, said Tuesday.

Constell offers services such as sorting of rough stones and polishing, concentrating on aiding the transformation of raw materials into finished stones in the most cost-effective way, it said. The group, founded in India, employs more than 4,000 people worldwide.

Sarine, an Israel-based supplier of diamond-manufacturing and grading equipment, will receive remuneration based on each stone processed, regardless of the specific technologies the company uses.

Source: Diamonds.net

Lucapa acquires Merlin diamond project in Australia

  Merlin diamond mine in Australia’s Northern Territory.

Lucapa Diamond announced that it has entered into a binding asset sale agreement for the acquisition of a 24km2 mining lease and a 283km2 exploration tenement encompassing the mining lease and associated equipment and assets the Merlin Assets from Merlin Operations Pty.

Merlin Operations is a wholly-owned subsidiary of Merlin Diamonds Limited, which is in liquidation. The Merlin Tenements are located in the Northern Territory of Australia, approximately 720km southeast of Darwin.

Merlin is home to Australia’s largest mined rough diamond on record and has the potential to be the
only producing diamond mine in Australia, following the closure of Rio Tinto’s iconic Argyle mine in 2020, after 37 years in production.

The strategic acquisition is supported by a A$20 million ($15.5m) private placement plus a share purchase plan to raise up to A$3 million ($2.3m).

The acquisition price of A$8.5m cash represents a ~A$2/ carat multiple on Merlin’s existing 4.4m
carat JORC compliant resource and complements Lucapa’s existing portfolio, the company said, adding a near-term development opportunity with an existing 4.4m carat mineral resource estimate in Australia to Lucapa’s two existing producing assets in Angola and Lesotho.

The ~300km2 tenement package also comes with significant exploration upside, Lucapa said, through over 70 unresolved anomalies in areas where all kimberlite discoveries have been diamondiferous.

Source: DCLA