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Cullinan Heritage Diamond
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Petra Diamonds plans to sell a 507-carat uncut diamond from their Cullinan mine in an auction on Friday. It could sell for about $25 million.
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A 507-carat diamond, one of the biggest ever found and worth an estimated $25 million, is expected to be sold on Friday after attracting more buying interest than expected, seller Petra Diamonds said.
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Palawan Princess
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Bonhams and Butterfields will auction off what is believed to be the world's second-largest documented pearl, a five-pound gem found off the coast of the Philippines that has been dubbed the "Palawan Princess."
The natural non-nacreous pearl was found in sal****er near the Philippines' Palawan island and "bears an uncanny resemblance to a human brain," the auction house said. Both rare and immense, the gem is thought to be surpassed in size only by the 14-pound "Pearl of Allah," an approximately 14-pound, 31,893.5-carat pearl that, like the Palawan Princess, was the product of the giant clam shell Tridacna gigas and was also found off the coastal waters of the Philippines.

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RE: Gems & Jewellery
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The Nature of Diamonds
Prized by many cultures throughout the ages as a symbol of strength, wealth, and love, diamonds have inspired scientists, writers, and artisans for thousands of years. See nearly 800 exquisite objects, including some of the world's most stunning gemstones, that tell the story of our fascination with the beauty and power of this "King of Gems." Feast your eyes on the 128.54-carat Tiffany Diamond - one of the world's largest and finest fancy yellow diamonds - and the Incomparable Diamond- weighing in at 407.48 carats as the largest flawless diamond ever graded by the GIA and the third largest cut diamond ever recorded! Discover the seamless blend of artistry and science found in The Nature of Diamonds, at The Field Museum from October 23, 2009 through March 28, 2010.

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SSESC
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The South Suburban Earth Science Club celebrates their 40th Annual South Suburban Earth Science Clubs Fossil, Gem, Mineral and Jewellery Show on Saturday and Sunday, October 17th and 18th, from 10:00 a.m. to 5:00 p.m. The show is held on the first floor in the gym at Prairie State College, 202 South Halsted St., Chicago Heights, IL . The school is fully accessible to the handicapped.
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Posts: 128081
Date:
Diamonds
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Giant 507 carat stone
AIM-listed Petra Diamonds (PDL.L) said on Tuesday it had recovered one of the world's 20 largest, high-quality white diamonds at the Cullinan mine in South Africa.
The massive 507.55 carat diamond, found on Sept. 24, could be worth about $20 million, and is expected to cover costs at the mine for two years, Finance Director David Abery said.

"Initial examinations indicate that it is of exceptional colour and clarity" - Petra Diamonds, adding it was found alongside other large white diamonds of 168 carats, 58.50 carats and 53.30 carats.

"The Cullinan mine has again given the world a spectacularly beautiful and important diamond" - Chief Executive Johan Dippenaar, noting Cullinan was the source of the world's largest gem diamond ever recovered, at 3,106 carats rough.

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RE: Gems & Jewellery
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The meteorites that come crashing down from space are often flecked with diamonds, though they are tiny and not of gem quality.
Hollywood jeweller Neil Lanes vision of diamond meteorites is, of course, much more glam.
Using the rough, amorphous chunks of space rock as inspiration, Lane has created dramatic platinum spheres, covered with diamonds, rock crystals and pearls.
Fittingly, Lane unveiled his Meteorite collection at the California premiere of Star Trek in May.

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Kimberlite
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The ON-K120 Kimberlite is one of the largest diamond bearing kimberlites in the world, with a surface area totalling some 102 hectares situated within claims of the FALC-JV. The largest operating diamond mine is Orapa in Botswana and the mined AK1 kimberlite has an area 103 hectares.
A resource estimate has not yet been determined for the ON-K120 Kimberlite but kimberlite tonnage estimates, which are conceptual in nature, were published in the SGF News Release of November 21, 2006. No underground bulk sampling has been undertaken to date in Orion North. It is Shore's assertion that diamond loss and diamond breakage occur (particularly of the large stones) in the case of the LDD mini-bulk samples.

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Perfect blue diamond
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The 7.03 carat diamond, from the Cullinan mine in South Africa, is no wider than a penny piece, but it is one of only a handful in the world and is expected to reach somewhere between $5.8 million and $8.5 million (3.9 million and 5.7 million) when it is sold in Geneva.

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Kazanjian Red Diamond
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One of just three in the world, the Kazanjian Red Diamond is currently being held at the Hixon Gem Vault in Los Angeles.

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The Hope Diamond
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Democratic America has no crown jewels. but we've got the next best thing, or maybe a better thing altogether, in the Smithsonian's National Gem Collection, on display in the National Museum of Natural History in a new setting that suits its splendour, the Janet Annenberg Hooker Hall of Geology, Gems and Minerals.
The gem collection dates back to 1884, when a curator in the Smithsonian's Division of Mineralogy assembled a modest array of American precious stones for display that year at the New Orleans Exhibition. In the ensuing 116 years, the collection has grown to a dazzling scale and beauty, thanks almost entirely to donors who wanted their jewels to be in the nation's museum.

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