Pink Diamond fetches $2.2M USD Per carat at Christie’s

A pink diamond ring named for its resemblance to bubble gum fetched $7.5 million at Christie’s Hong Kong auction.

The exceptional fancy vivid purplish pink internally flawless brilliant cut cushion, Sold for $2.2 million per carat.

The ring was designed by Moussaieff and features the Cushion weighing 3.43 carats diamond as well as pear shaped pink diamonds and marquise cut white diamonds.

The estimated was $6 million to $8 million.

The ring was the top selling lot at the Magnificent Jewels sale.

Source: DCLA

Pink Diamond fetches $2.2M USD Per carat at Christie’s

A pink diamond ring named for its resemblance to bubble gum fetched $7.5 million at Christie’s Hong Kong auction.

The exceptional fancy vivid purplish pink internally flawless brilliant cut cushion, Sold for $2.2 million per carat.

The ring was designed by Moussaieff and features the Cushion weighing 3.43 carats diamond as well as pear shaped pink diamonds and marquise cut white diamonds.

The estimated was $6 million to $8 million.

The ring was the top selling lot at the Magnificent Jewels sale.

Source: DCLA

Undisclosed Green Synthetics Raise GIA Eyebrows

Twenty five undisclosed lab grown diamonds have turned up at the Gemological Institute of America (GIA) including several with a rare greenish color.

The GIA’s lab in Carlsbad, California, recently received the stones weighing from 0.46 to 0.52 carats for grading reports. They all proved to have been created using High Pressure High Temperature (HPHT), GIA senior research scientist Sally Eaton Magaña explained in a lab note published in the Spring 2019 issue of Gems & Gemology, the institute’s quarterly scientific journal.

While nine of the stones were colorless or near-colorless, eight had faint yellow green color, seven were faint green, and one was very light green. The coloring resulted from a high concentration of nickel, an impurity that’s common in HPHT, but rarely in large enough amounts to affect the color, Eaton Magaña explained. (In diamonds at large, nickel can cause a green hue.) GIA gemologists previously reported on a fancy deep yellowish green HPHT diamond in 2017, with nickel also the cause in that case.

“As laboratory grown diamond manufacturers continue to experiment with their recipes and the process further evolves, we will likely see greater quantities and a wider variety of color ranges,” Eaton Magaña wrote. The occasion also gave a rare opportunity to analyze a large dataset of similar but unusually colored HPHT diamonds, she noted.

The Spring edition of Gems & Gemology also reported on a natural diamond with a synthetic layer the second such case the GIA had seen in about two years.

Source: DCLA

Undisclosed Green Synthetics Raise GIA Eyebrows

Twenty five undisclosed lab grown diamonds have turned up at the Gemological Institute of America (GIA) including several with a rare greenish color.

The GIA’s lab in Carlsbad, California, recently received the stones weighing from 0.46 to 0.52 carats for grading reports. They all proved to have been created using High Pressure High Temperature (HPHT), GIA senior research scientist Sally Eaton Magaña explained in a lab note published in the Spring 2019 issue of Gems & Gemology, the institute’s quarterly scientific journal.

While nine of the stones were colorless or near-colorless, eight had faint yellow green color, seven were faint green, and one was very light green. The coloring resulted from a high concentration of nickel, an impurity that’s common in HPHT, but rarely in large enough amounts to affect the color, Eaton Magaña explained. (In diamonds at large, nickel can cause a green hue.) GIA gemologists previously reported on a fancy deep yellowish green HPHT diamond in 2017, with nickel also the cause in that case.

“As laboratory grown diamond manufacturers continue to experiment with their recipes and the process further evolves, we will likely see greater quantities and a wider variety of color ranges,” Eaton Magaña wrote. The occasion also gave a rare opportunity to analyze a large dataset of similar but unusually colored HPHT diamonds, she noted.

The Spring edition of Gems & Gemology also reported on a natural diamond with a synthetic layer the second such case the GIA had seen in about two years.

Source: DCLA

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Lucapa recovers first +100 carat diamond from Mothae

Lucapa Diamond Company has recovered its first+100 carat diamond for its Mothae mine in Lesotho.

The stone is a gem-quality 126 carat diamond and is the largest diamond recovered since commercial mining operations commenced in January 2019.

The diamond is also the sixth +50 carat diamond recovered since Lucapa commenced its pre-production bulk sampling programme at Mothae in 2018.

It comes shortly after Lucapa and its partners recovered a 130 carat gem-quality diamond from the company’s high-value Lulo alluvial mine in Angola.

Lesotho Minister of Mining, the Honourable Keketso Sello, said the recovery of the 126 carat diamond represented another milestone for Lesotho’s highly-prospective diamond sector.

“Lesotho is very proud of its international reputation as a producer of large and high-quality diamonds and this latest recovery from our newest mine, Mothae, continues to demonstrate our nation’s great potential,” said minister Sello.

Lucapa MD Stephen Wetherall said the 126 carat diamond was further proof of the large stone and high-value nature of the Mothae kimberlite resource, which is located within 5 km of Letseng, the world’s highest US$ per carat kimberlite diamond mine.

“We are delighted to have recovered our first +100 carat stone so early in our commercial mining

campaign at Mothae, along with other rare Type IIa and fancy coloured gems, and look forward to

unlocking the true value of this mine over the next decade and beyond,” Wetherall concluded.

Source: DCLA