It’s 50 years since the world’s largest octahedral diamond was recovered, and even today it remains uncut, unpolished and unsold.
The 616-carat Type 1 yellow diamond, dates back to 17 April 1974 and comes from the Dutoitspan Mine in Kimberley, South Africa, which opened in the 1870s and closed in 2005.
The miner who found the diamond, De Beers employee Abel Maretela, was rewarded with a large bonus and a house.
Al Cook, De Beers Group CEO, was shown the diamond on a visit to Johannesburg, by Moses Madondo, CEO of De Beers Group managed operations.
“I’m a geologist so I love to learn about the history of diamonds even before they were found,” he said in a LinkedIn post.
“This is a Type 1 diamond which means that it was formed around 150 km below the earth’s surface, deep in the mantle, over 1 billion years ago.
“During the Cretaceous period, about 100 million years ago, a kimberlite volcano brought this diamond up to the earth’s surface. Its beautiful yellow colour comes from nitrogen atoms that were trapped inside the carbon lattice when it was forming in the mantle.”
Confidence is the “fifth C” of the diamond sector and its role has rapidly gained increased importance at every touchpoint of a diamond’s journey. Customers, suppliers, financiers and end consumers all have a rightfully heightened demand of assurance when it comes to diamonds. With more than 130 years of experience as a leader in the industry, De Beers Group is dedicated to building and solidifying confidence within every touchpoint our diamonds reach. Designed to combine expertise with innovative technology in grading, De Beers Institute of Diamonds provides our industry with the very best in diamond verification with a range of products and services that provide confidence in product integrity, product knowledge and product assessment.
At the De Beers Institute of Diamonds, our grading is guided by three key principles:
Accuracy – Our laboratories use market leading instruments and proprietary technology to support our grading, providing the most accurate and consistent diamond appraisals.
Integrity – In using a ‘black box’ system – where diamonds are distributed in anonymous boxes so that each diamond is appraised fairly according only to its features – ensures the integrity of all our processes.
Consistency – Our team is built around some of the world’s most experienced graders, who undergo rigorous training, carrying the knowledge and expertise to evaluate every diamond accurately and consistently, wherever it was mined.
Every diamond we grade as part of our services is natural, untreated and from a recognized diamond producer.
We believe there is more to a diamond than its weight and appearance. We work only with natural diamonds, disclosed to us as compliant with the United Nations mandated World Diamond Council Kimberley Process – a foundational commitment to the modern diamond industry. Additionally, an assessment from De Beers Institute of Diamonds provides diamantaires with confidence in a report of each diamond’s 4Cs of carat, color, clarity and cut. Every diamond graded at De Beers Institute of Diamonds is given a unique inscription number, allowing the diamond details to be tracked and viewed on our website, for added peace of mind.
Every diamond we handle has benefited from our unrivalled range of accumulated expertise and exclusive proprietary technology – the most advanced diamond services and verification instruments in the trade.
Hardwiring our expertise into technology underpins our ability to give customers accurate, reliable and repeatable outcomes within our diamond grading services. Our technology leadership ensures our customers can have 100% trust in both the integrity and assessments of their diamonds, helping them in turn offer this priceless commodity to their own supply chain partners. This confidence is passed to the end consumer, providing both promise and security that their diamond has been on a journey filled with our guiding principles of transparency, accuracy and consistency.
Without the ability in instill confidence within the industry and directly the consumer, a diamond holds very little value. Empowering the industry with our expertise channeled into technology and grading allows De Beers to deliver the most reputable product on the market. Diamonds are so much more than just their unique beauty and De Beers Institute of Diamonds ensures their story remains as intact as their sparkle.
De Beers increased prices of goods above 2 carats at this week’s sight as shortages of rough coincided with strong polished demand.
Prices rose around 5%, and more in some categories, market insiders told Rapaport News on Monday. Near-gem items also saw significant increases, while prices for other stones under 2 carats were either stable or slightly up.
“They seem to have picked areas where they’ve seen room [for price growth], and they’ve just hiked the prices up,” a source in the rough sector said on condition of anonymity. “For the time being, the market is absorbing it.”
Rough trading has been strong in recent weeks because of reduced supply from the large miners and solid polished sales. The RapNet Diamond Index (RAPI™) for 1-carat diamonds has risen 2.5% since May 1.
Rough above 1 carat has been especially sought-after, with premiums on the secondary market rising while manufacturers look to fill inventory gaps. A backlog of grading submissions at the Gemological Institute of America (GIA) has exacerbated the situation.
The June sight value will be similar to last month’s $380 million as customers snap up the limited goods available at the sale, sources said. Proceeds were higher earlier in the year — peaking at $663 million in January — when manufacturers restocked after the holidays and De Beers had larger volumes available to sell.
“There’s a shortfall in goods,” an executive at an Indian sightholder said Monday. “They’re not able to serve everyone what they’re entitled to.”
Rough demand slumped during the 2020 coronavirus crisis as the global supply chain froze. De Beers chose to maintain prices until August, when it offered deep discounts to encourage sightholders to resume buying. It has since reversed those cuts, gradually bringing prices to above pre-pandemic levels in many categories.
The sight began on Monday and runs until Friday. De Beers was not available for comment at press time.
De Beers increased prices of goods above 2 carats at this week’s sight as shortages of rough coincided with strong polished demand.
Prices rose around 5%, and more in some categories, market insiders told Rapaport News on Monday. Near-gem items also saw significant increases, while prices for other stones under 2 carats were either stable or slightly up.
“They seem to have picked areas where they’ve seen room [for price growth], and they’ve just hiked the prices up,” a source in the rough sector said on condition of anonymity. “For the time being, the market is absorbing it.”
Rough trading has been strong in recent weeks because of reduced supply from the large miners and solid polished sales. The RapNet Diamond Index (RAPI™) for 1-carat diamonds has risen 2.5% since May 1.
Rough above 1 carat has been especially sought-after, with premiums on the secondary market rising while manufacturers look to fill inventory gaps. A backlog of grading submissions at the Gemological Institute of America (GIA) has exacerbated the situation.
The June sight value will be similar to last month’s $380 million as customers snap up the limited goods available at the sale, sources said. Proceeds were higher earlier in the year — peaking at $663 million in January — when manufacturers restocked after the holidays and De Beers had larger volumes available to sell.
“There’s a shortfall in goods,” an executive at an Indian sightholder said Monday. “They’re not able to serve everyone what they’re entitled to.”
Rough demand slumped during the 2020 coronavirus crisis as the global supply chain froze. De Beers chose to maintain prices until August, when it offered deep discounts to encourage sightholders to resume buying. It has since reversed those cuts, gradually bringing prices to above pre-pandemic levels in many categories.
The sight began on Monday and runs until Friday. De Beers was not available for comment at press time.
