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Second biggest diamond ever found in Botswana
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2024-08-22 at 8:25 PM UTC
A 2,492-carat diamond – the second largest in the world – has been discovered in Botswana, says the Canadian mining company that found the stone.
https://www.aljazeera.com/news/2024/8/22/worlds-second-largest-diamond-found-in-botswana
The diamond was discovered in the Karowe Diamond Mine in northeastern Botswana using X-ray technology, Lucara Diamond Corp said in a statement on Thursday.
Lucara did not give a value for the find or mention its quality. But in terms of carats, the stone is second only to the 3,016-carat Cullinan Diamond discovered in South Africa in 1905.
“We are ecstatic about the recovery of this extraordinary 2,492-carat diamond,” Lucara President William Lamb said in the statement.
Pictures released by the company show the diamond is as large as the palm of a hand.
This find was “one of the largest rough diamonds ever unearthed” and was detected using the company’s Mega Diamond Recovery X-ray technology installed in 2017 to identify and preserve large, high-value diamonds, the statement said.
Botswana President Mokgweetsi Masisi was shown the massive stone later on Thursday. His government said it was the second biggest in the world.
Tobias Kormind, managing director of Europe’s largest online diamond jedieller, 77 Diamonds, confirmed it was the largest rough diamond to be unearthed since the Cullinan Diamond, parts of which adorn Britain’s crown jediels.
“This discovery is largely thanks to newer technology that allows larger diamonds to be extracted from the ground without breaking into pieces. So we will likely see more where this came from,” he said.
It's actually the biggest diamond in the world, since the Cullinan Diamond was cut up.The following users say it would be alright if the author of this post didn't die in a fire! -
2024-08-22 at 8:49 PM UTCNice rock.
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2024-08-22 at 8:51 PM UTCu can tell the hand holding it has never done any mining
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2024-08-22 at 9:08 PM UTCTime to start a colony there
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2024-08-22 at 9:35 PM UTCSurprisingly, raw diamond is not worth very much: $2,500 per carat. The value is in the cutting. That one would be worth about $6.2 million US$.
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2024-08-22 at 9:45 PM UTC
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2024-08-22 at 9:52 PM UTC
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2024-08-22 at 9:55 PM UTCLooks like it's flawed as fuckery...it'll be cut down to 1000 tiny bullshit ones...I'll give you 10 quid for it and I'm doin you a favor.
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2024-08-22 at 10:01 PM UTCI like my ladies like I like my diamonds....
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2024-08-22 at 10:09 PM UTC
Originally posted by Jiggaboo_Johnson Looks like it's flawed as fuckery…it'll be cut down to 1000 tiny bullshit ones…I'll give you 10 quid for it and I'm doin you a favor.
Brits up to their old tricks. That's how they wound up with the Cullinan diamond.
https://en.wikipedia.org/wiki/Cullinan_Diamond -
2024-08-22 at 10:19 PM UTC
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2024-08-22 at 10:30 PM UTCSlicing up women is illegal
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2024-08-22 at 10:35 PM UTCBlue diamonds are the most expensive gemstones on earth. The largest one is the De Beers Cullinan Blue. $US57.5 million.
The following users say it would be alright if the author of this post didn't die in a fire! -
2024-08-22 at 10:39 PM UTCUnited States Patent 6,143,939
November 7, 2000
Method of Dehalogenation Using Diamonds
Inventors: Malvina Farcasiu, Roslyn Harbor, N.Y.; Phillip B. Kaufman, Lafayette, La.; Edward P. Ladner, Pittsburgh; Richard R. Anderson, Brownsville, both of Pa.
Abstract:
A method for preparing olefins and halogenated olefins is provided comprising contacting halogenated compounds with diamonds for a sufficient time and at a sufficient temperature to convert the halogenated compounds to olefins and halogenated olefins via elimination reactions.BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to a method for producing olefins and halogenated olefins, and more specifically, this invention relates to a method for using diamonds and carbon composite materials containing diamonds to catalyze elimination reactions of halogenated compounds to produce olefins and halogenated olefins.
2. Background of the Invention
Dehalogenation reactions and hydrodehalogenation reactions are combined to produce polyvinyl chloride. Current production capacity for polyvinyl chloride is approximately 9.8 billion pounds annually.
The above-mentioned elimination reaction is typically performed thermally at temperatures ranging from 500.degree. C. and 600.degree. C. However, the use of activated carbons in the reaction mixture has resulted in lowering the temperature requirements to between 300.degree. C. and 400.degree. C. Catalytic cracking on pumice or charcoal impregnated with BaCl.sub.2 or ZnCl.sub.2 also has been utilized. However, these procedures have not been widely adopted due to the limited life of the resulting catalysts.
Other efforts for enhancing the catalytic activity of activated carbon in these reactions include incorporating nitrogen materials into the lattice structure of the carbon. While the industrial applicability of the resulting carbon material is not known, it is likely that the resulting carbon is more expensive than typical activated carbon materials.
A need exists in the art for a method to produce olefins and monohalogenated olefins from dihalogenated aliphatic compounds via elimination reactions that can be performed at temperatures much lower than those required in thermal processes. The method should be economical and also employ a reusable catalyst which does not require any preparation.
SUMMARY OF THE INVENTION
It is an object of the invention to provide a method for dehalogenating and hydrodehalogenating halogenated compounds that overcomes many of the disadvantages of the prior art.
Another object of the present invention is to provide a method for converting alkyl halides to olefins and halogenated olefins. A feature of the invention is the use of diamonds as a catalyst for the elimination reaction. An advantage of the invention is that the reaction can proceed at temperatures much lower than those required for thermal reactions.
Still, another object of the present invention is to provide an economical method for producing vinyl chloride. A feature of the invention is the dehalogenation and hydrodehalogenation of 1,2 allyl halide using diamond catalysts. An advantage of the invention is that the diamond catalyst can be utilized for elimination reactions at temperatures of between 200.degree. C. and 350.degree. C., and preferably between 250.degree. C. and 290.degree. C. as compared to 500.degree. C. to 600.degree. C. currently used in thermal processes.
Briefly, the invention provides for a method for preparing olefins and monohalogenated olefins comprising contacting halogenated compounds with diamonds for a sufficient time and at a sufficient temperature to convert the halogenated compounds to olefins.
Also, provided is a device for producing olefins from halogenated compounds comprising an underlayment defining a chamber; a diamond coating on a surface of the underlayment; means for hermetically sealing the underlayment to an ingress manifold and an egress manifold so as to facilitate fluid flow through the chamber; and means for heating the chamber.
A method for producing vinyl chloride is also provided comprising contacting 1,2 dichloroethane with a diamond catalyst for a sufficient time and at a sufficient temperature to convert the 1,2 dichloroethane to a product in a hydrodechlorination reaction. -
2024-08-22 at 10:44 PM UTCThe CTF Pink Star Diamond, valued at $US71.2 million.
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2024-08-23 at 5:05 AM UTC
Originally posted by ⠀⠀⠀⠀⠀⠀ Surprisingly, raw diamond is not worth very much: $2,500 per carat. The value is in the cutting. That one would be worth about $6.2 million US$.
Originally posted by ⠀⠀⠀⠀⠀⠀ Surprisingly, raw diamond is not worth very much: $2,500 per carat. The value is in the cutting. That one would be worth about $6.2 million US$.
The price of natural raw diamond stones ranges from 25 to 21,000 USD per carat depending on the quality and size. -
2024-08-23 at 5:20 AM UTC
Originally posted by Donald Trump
https://www.aljazeera.com/news/2024/8/22/worlds-second-largest-diamond-found-in-botswana
It's actually the biggest diamond in the world, since the Cullinan Diamond was cut up.
If I was the miner that found it I'd sneak that bitch out on the hush. I'm guessing multiple people probably found it or whatnot. I didn't read that entire article 🤷 -
2024-08-23 at 11:41 AM UTCYea but it's got a lot of inclusions.
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2024-08-23 at 1:22 PM UTCThe following users say it would be alright if the author of this post didn't die in a fire!
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2024-08-23 at 3:30 PM UTC
