Synova Launches Automated Diamond Cutter

A technology provider part-owned by De Beers has unveiled an automated cutting machine that, it claims, will significantly speed up diamond manufacturing and reduce costs.

Synova’s DaVinci system is the market’s first automated instrument that can produce all 57 facets of a round brilliant diamond in one process, the Swiss company said Thursday. The user only needs to perform one final polishing stage to finish the stone.

“Several cost, skill and labor intensive steps in the polishing phase, such as crown and pavilion blocking, girdle bruting or recurrent quality checks, become redundant,” noted Bernold Richerzhagen, Synova’s founder and CEO.

Synova cutting machine

The machine, currently intended for rough stones from 0.50 to 10 carats, gives manufacturers increased flexibility to adapt their production levels to business needs, such as seasonal demand, Synova explained.

It also gives better symmetry and a higher and more predictable polished yield, and uses water jet technology to reduce the risk of diamond cracking, the company asserted. It’s based on its existing DCS 50 cutting machine.

De Beers bought a 33% stake in Synova in 2015, pledging to work with the company to develop a fully automated cutting and shaping solution. The miner has made diamonds available for some of the machine testing.

Source: DCLA

Synova Launches Automated Diamond Cutter

A technology provider part-owned by De Beers has unveiled an automated cutting machine that, it claims, will significantly speed up diamond manufacturing and reduce costs.

Synova’s DaVinci system is the market’s first automated instrument that can produce all 57 facets of a round brilliant diamond in one process, the Swiss company said Thursday. The user only needs to perform one final polishing stage to finish the stone.

“Several cost, skill and labor intensive steps in the polishing phase, such as crown and pavilion blocking, girdle bruting or recurrent quality checks, become redundant,” noted Bernold Richerzhagen, Synova’s founder and CEO.

Synova cutting machine

The machine, currently intended for rough stones from 0.50 to 10 carats, gives manufacturers increased flexibility to adapt their production levels to business needs, such as seasonal demand, Synova explained.

It also gives better symmetry and a higher and more predictable polished yield, and uses water jet technology to reduce the risk of diamond cracking, the company asserted. It’s based on its existing DCS 50 cutting machine.

De Beers bought a 33% stake in Synova in 2015, pledging to work with the company to develop a fully automated cutting and shaping solution. The miner has made diamonds available for some of the machine testing.

Source: DCLA

Lucara finds blue and pink diamonds at Botswana mine

Canada’s Lucara Diamond continues to find gem quality, coloured diamonds at its Karowe mine, in Botswana, which in April yielded the 1,758 carat Sewelô meaning “rare find” diamond, the largest ever recovered in the African country.

The Vancouver based miner has now recovered a 9.74 carat blue and a 4.13 carat pink diamond from direct milling of the South Lobe, the area that yielded the famous 1,111 carat “Lesedi La Rona” in 2015.

The announcement comes on the heels of last week’s display of a 123 carat gem quality, top white, Type II diamond, found at the same section of the mine.

It also follows the recent sale of a 2.24 carat blue for $347,222 per carat.

Karowe, which began commercial operations in 2012, has this year yielded 22 diamonds larger than 100 carats, eight of them exceeding 200 carats.

Since the start of the year, the miner has sold 19 diamonds each with an individual price in excess of $1 million at its quarterly tender sales. This includes seven diamonds that fetched more than $2 million each, and one diamond that carried a final price tag of over $8 million.

“Lucara is extremely pleased with the recovery of these rare, sizeable, fancy coloured diamonds, which have the potential to contribute meaningful value to our regular production of large, high-value type IIa diamonds,” chief executive, Eira Thomas, said in the statement.

The precious rocks will be put up for sale in December, during the company’s fourth quarter tender.

Lucara, which has focused efforts on the prolific Botswana mine this year, is close to completing a feasibility study into potential underground production and life of mine expansion at Karowe.

Source: DCLA

Lucara finds blue and pink diamonds at Botswana mine

Canada’s Lucara Diamond continues to find gem quality, coloured diamonds at its Karowe mine, in Botswana, which in April yielded the 1,758 carat Sewelô meaning “rare find” diamond, the largest ever recovered in the African country.

The Vancouver based miner has now recovered a 9.74 carat blue and a 4.13 carat pink diamond from direct milling of the South Lobe, the area that yielded the famous 1,111 carat “Lesedi La Rona” in 2015.

The announcement comes on the heels of last week’s display of a 123 carat gem quality, top white, Type II diamond, found at the same section of the mine.

It also follows the recent sale of a 2.24 carat blue for $347,222 per carat.

Karowe, which began commercial operations in 2012, has this year yielded 22 diamonds larger than 100 carats, eight of them exceeding 200 carats.

Since the start of the year, the miner has sold 19 diamonds each with an individual price in excess of $1 million at its quarterly tender sales. This includes seven diamonds that fetched more than $2 million each, and one diamond that carried a final price tag of over $8 million.

“Lucara is extremely pleased with the recovery of these rare, sizeable, fancy coloured diamonds, which have the potential to contribute meaningful value to our regular production of large, high-value type IIa diamonds,” chief executive, Eira Thomas, said in the statement.

The precious rocks will be put up for sale in December, during the company’s fourth quarter tender.

Lucara, which has focused efforts on the prolific Botswana mine this year, is close to completing a feasibility study into potential underground production and life of mine expansion at Karowe.

Source: DCLA

313 Carat Diamond Emerges as World’s Largest D Colour

Nemesis International on Thursday unveiled a 313 carat diamond that has been certified as the largest D colour polished stone in history.

The emerald shape, VVS1 clarity diamond, known as Constellation 1, is one of eight stones that make up a collection manufactured from the 813 carat Constellation rough, which Nemesis bought in partnership with Swiss jeweler de Grisogono for $63.1 million in 2016. At $77,613 per carat, the stone still ranks as the most expensive rough diamond ever sold.

Tom Moses, executive vice president and chief laboratory and research officer at the Gemological Institute of America, confirmed with Rapaport News that the stone was the largest graded D colour diamond on record.

However, Nemesis has no immediate plans to sell the diamonds, CEO Konema Mwenenge told Rapaport News on the sidelines of the Dubai Diamond Conference. “We want to showcase this as the work of art that it is,” he stressed. “Diamonds are not just a commodity and this stone is impossible to value. We’re focused on building its legacy.”

The company is considering a roadshow to display the collection around the world at museums and other platforms. “We want to keep them as a family from the same rough,” Mwenenge added. The eight stones vary in size and shape, and range in clarity from flawless to internally flawless and VVS. The second largest stone in the family is a 102 carat diamond.

The diamonds will also be presented in their full polished form for now, but will eventually be mounted into jewelry. That contrasts with the company’s last major project, the Art of de Grisogono, an emerald cut, 163 carat, D flawless diamond, cut and polished in New York from a 404 carat rough diamond. That piece was sold as a necklace that could also transform into a bracelet, fetching $33.7 million at a Christie’s auction.

Source: DCLA

313 Carat Diamond Emerges as World’s Largest D Colour

Nemesis International on Thursday unveiled a 313 carat diamond that has been certified as the largest D colour polished stone in history.

The emerald shape, VVS1 clarity diamond, known as Constellation 1, is one of eight stones that make up a collection manufactured from the 813 carat Constellation rough, which Nemesis bought in partnership with Swiss jeweler de Grisogono for $63.1 million in 2016. At $77,613 per carat, the stone still ranks as the most expensive rough diamond ever sold.

Tom Moses, executive vice president and chief laboratory and research officer at the Gemological Institute of America, confirmed with Rapaport News that the stone was the largest graded D colour diamond on record.

However, Nemesis has no immediate plans to sell the diamonds, CEO Konema Mwenenge told Rapaport News on the sidelines of the Dubai Diamond Conference. “We want to showcase this as the work of art that it is,” he stressed. “Diamonds are not just a commodity and this stone is impossible to value. We’re focused on building its legacy.”

The company is considering a roadshow to display the collection around the world at museums and other platforms. “We want to keep them as a family from the same rough,” Mwenenge added. The eight stones vary in size and shape, and range in clarity from flawless to internally flawless and VVS. The second largest stone in the family is a 102 carat diamond.

The diamonds will also be presented in their full polished form for now, but will eventually be mounted into jewelry. That contrasts with the company’s last major project, the Art of de Grisogono, an emerald cut, 163 carat, D flawless diamond, cut and polished in New York from a 404 carat rough diamond. That piece was sold as a necklace that could also transform into a bracelet, fetching $33.7 million at a Christie’s auction.

Source: DCLA

Alrosa Board Approves Kristall Takeover

Alrosa is set to finalize its acquisition of diamond manufacturer Kristall in a $29 million deal in October, following approval from its supervisory board.

Alrosa expects the RUB 1.89 billion sale-and-purchase agreement to be signed by the end of the month, with a concrete plan for the manufacturer’s integration into the company to be in place by the end of the year, it noted.

Kristall is the leading polished-diamond manufacturer in Russia and Europe, processing more than 200,000 carats of rough annually. While Alrosa already runs a manufacturing unit, the acquisition of Kristall is set to expand its share of the polished-production market from 20% to 70%.

“Despite the fact that Alrosa is currently a key supplier of rough diamonds to Kristall, it accounts for as little as 0.5% of Alrosa’s sales of rough diamonds,” Alexey Philippovskiy, Alrosa’s deputy CEO, said Wednesday. “The deal value is less than 1% of Alrosa’s net assets and, according to our estimates, the purchase price will not exceed Kristall’s net assets at the date of the transaction.”

Last year Kristall produced 105,700 carats of polished diamonds, with sales of 111,700 carats. It reported revenue of RUB 12.8 billion ($199.1 million) and profit of RUB 40.7 million ($633,040). The company also operates a jewelry entity and a business that produces tooling and equipment for the diamond industry.

Source: DCLA