I love yellow diamonds. Many thanks to Jill Newman of Robb Report and Victoria Wirth Reynolds, chief gemologist of Tiffany & Co for sharing an insightful story of the two yellow diamonds.
Showing posts with label colored diamonds. Show all posts
Showing posts with label colored diamonds. Show all posts
Thursday, October 19, 2023
Friday, August 18, 2023
Yellow Zoning In Pink Diamonds
Many thanks to researchers at GIA Carlsbad for sharing an insightful report on pink diamonds.
Patchy Yellow Trigon
Take a look at the unusual growth event in a yellow diamond with trigons. Many thanks to researchers at GIA Carlsbad for the report.
Saturday, April 22, 2023
Friday, December 09, 2022
Why Are Large Diamonds Losing Their Luster At Auction?
Fatigue. COVID-19. Recession. Too many large diamonds in the market.
Tuesday, November 22, 2022
Thursday, July 28, 2022
The Lulo Rose
A brilliant storyteller. A 170 carat rough diamond was discovered during excavations at the Lulo mine in Angola. The type IIa rough diamond is believed to be the largest pink diamond recovered in the last 300 years.
Tuesday, August 03, 2021
The Fancy Color Diamond Price Index 2021
The index tracks prices of yellow, pink, and blue fancy color diamonds in Hong Kong, New York, Geneva and Tel Aviv. Prices of fancy color diamonds have increased in the second quarter amid supply shortages.
Thursday, May 20, 2021
Final Showcase Of Argyle Pink, Red And Blue Diamonds
Mining ceased at Argyle on 3 November, 2020 and the 2021 Argyle Pink Diamonds Tender is the final collection of the rarest diamonds from the final year of Argyle operations. The Argyle Pink Diamonds Tender, an annual invitation-only event for the past 38 years, is widely considered to be the most anticipated diamond sale in the world, showcasing the pinnacle of Argyle's production to exclusive group of collectors, diamond connoisseurs and luxury jewelry houses. The 2021 Argyle Pink Diamonds Tender will be showcased in Perth, Antwerp, Singapore and Sydney, subject to COVID-19 protocols. Bids close on September 1, 2021.
Saturday, April 03, 2021
Petra Diamonds Finds 39-carat Blue Diamond At Cullinan Mine
South Africa's Petra Diamonds has found a blue rough diamond at Cullinan mine, a 39.34-carat, type IIb said to be of exceptional quality due to both its color and clarity. Take a look.
Friday, January 01, 2021
Leibish Buys A Quarter Of Diamonds At Argyle Pink Diamonds Tender
Leibish Polnaur bought a quarter of the diamonds at Argyle's record breaking tender. He outbid rivals for 16 of the 62 diamonds, marking the closure of the mine in Australia after 37 year. He named his 2020 tender cache the Pink Sunset Collection in homage to Argyle's last days. A standout is Lot 3, the Argyle Sakura, a 1.84 carat pear-shaped fancy vivid purplish pink diamond. He upped his bids by 20 per cent and more to purchase the diamonds. I hope he does well with his new collection.
Monday, December 21, 2020
Argyle Pink Diamonds Tender 2020
Rio Tinto achieved record value at its 2020 Argyle Pink diamonds Tender, after bidders raised prices for the rare diamonds as supply has come to an end. The company offered 62 pink, red, blue and violet diamonds, weighing a total of 57.23 carats. It allowed participants to view the diamonds using live streaming and a virtual portal at locations in Antwerp, Singapore and Perth, Australia, due to travel restrictions associated with the coronavirus pandemic.
Friday, November 27, 2020
Letšeng Recovers 14 Carat Pink Diamond
Gem Diamonds has recovered a 14.09 top quality Type II pink diamond from its Letseng mine in Lesotho. Take a look.
Tuesday, August 18, 2020
India Bore Diamond Holdings Discovers Rare Purple Fluorescent Diamonds At Ellendale
An independent study of IBDH diamonds by Perth-based Delta Diamond Laboratory has revealed that a number of diamonds mined within the L-Channel at Ellendate display an extremely rare purple or violet fluorescence. Ellendate fancy yellow diamonds command a premium in the market and are regarded by many world diamantaires as among the highest quality fancy yellow diamond production in the world. Fluorescence occurs in about 30% of natural diamonds and more than 95% of these fluoresce blue, with yellow and green representing just a few percent.
Useful link:
https://ibdh.com.au
Useful link:
https://ibdh.com.au
Tuesday, March 31, 2020
Tuesday, March 24, 2020
Why Are Pink Diamonds Pink?
Possibly plastic deformation, but still the experts do not know the actual atomic structure of the defect causing color.
Useful link:
https://www.gia.edu/gia-news-research/why-pink-diamonds-pink-gia-researchers-dive-deep-into-crystal-structure
Useful link:
https://www.gia.edu/gia-news-research/why-pink-diamonds-pink-gia-researchers-dive-deep-into-crystal-structure
Saturday, February 29, 2020
Monday, February 24, 2020
Sunday, December 29, 2019
Natural-Color Fancy White And Fancy Black Diamonds: Where Color And Clarity Converge
These two colors are outliers within the colored diamond world. Gemologists must read the GIA report.
Useful link:
https://www.gia.edu/gems-gemology/fall-2019-fancy-white-fancy-black-diamonds
Useful link:
https://www.gia.edu/gems-gemology/fall-2019-fancy-white-fancy-black-diamonds
Tuesday, December 17, 2019
World’s Pink Diamonds Is Drying Up. Here’s Why.
It's finite, like a famous artist passing away, where no new art will ever come onto the market.
Useful links:
https://argylepinkdiamonds.com.au
https://robbreport.com/style/jewelry/argyle-pink-diamonds-australia-2874894
Useful links:
https://argylepinkdiamonds.com.au
https://robbreport.com/style/jewelry/argyle-pink-diamonds-australia-2874894
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