education

9.07 carat diamond found on 9/07 in Arkansas
Kevin Kinard visited Crater of Diamonds State Park regularly for more than 25 years, but never found a diamond until Labor Day 2020. Now he has the distinction of discovering the second largest diamond to ever come from the popular Arkansas tourist site, at just over nine carats.
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See IGI’s dynamic new Grading Report format
We are pleased to announce a new, elevated design for our identification and grading reports. This design update comes 45 years after our first Diamond report was issued in Antwerp, Belgium, in 1975.
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Petra finds 5 rare blue diamonds totaling 85+ carats!
Can we call them the Blues Brothers? Individually weighing 25.75 carats, 21.25 carats, 17.57 carats, 11.42 carats and 9.61 carats, Petra Diamonds reports that these spectacular siblings were assessed to be individual stones, not originally part of a larger diamond.
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IGI diamond grading among the world’s strictest
Another independent analysis has concluded that IGI’s loose diamond grading ranks among the world’s strictest. In an independent comparison of dual-certified diamonds IGI’s color grading was stricter than that of GIA in a majority of cases, with clarity the same or stricter in most cases, as well.
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ALROSA auctions confirm demand for high-quality diamonds
ALROSA reported more than $20 million in revenue generated by special-size rough diamond auctions in Belgium and Israel this month. The diamonds were sold to clients from Belgium, India, Israel and United Arab Emirates.
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This 102.39 carat D Flawless diamond will make history
An exceptionally rare, clear diamond “the size of a lollipop” is being offered without reserve at auction by Sotheby’s. According to the auction house, an item of this historic importance and value has never been offered with no-reserve before.
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‘One Lifetime, One Encounter’ auction honors Argyle mine closure
The Argyle Diamond Mine in the remote east Kimberley region of Western Australia is scheduled to close by the end of 2020 following nearly forty years of production. “One Lifetime, One Encounter” is an auction event, offering a collection of the rarest diamonds extracted there over a year’s production.
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What are Hearts & Arrows diamonds?
Hearts & Arrows (H&A) diamonds are precisely cut to show kaleidoscopic patterns when seen in a special reflective viewer. Typically associated with Excellent-Ideal cuts of superior quality, fashioning the highest levels of H&A optical precision when working with the world’s hardest substance is an exacting process.
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10 Graff diamond jewelry pieces compiled in video
A well-organized compilation of 10 beautiful Graff creations, splendidly set to music. Settle in for 13 minutes and 13 seconds of glorious, uplifting creations from the masters at Graff.
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See this 10-carat LGD’s color transformed from yellow to pink!
This 10+ carat HPHT produced lab-grown diamond was initially graded Fancy Intense Yellow by IGI. When it returned to the lab its color had been changed to Fancy Vivid Pink. IGI confirmed that the color had been shifted from yellow to pink through irradiation using a 5MeV Electron Beam Transfer system.
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See video of this 15,858-diamond world record watch!
Last year, Hong Kong based Coronet, a division of Aaron Shum Jewelry, set the Guinness World Record for most diamonds set on a watch at Baselworld, with “Mudan,” adorned with an astonishing 15,858 diamonds weighing 50.01 carats.
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236 carat fancy-colored diamond breaks records
The Ebelyakh mine in Yakutia has yielded a number of remarkable colored diamonds in the past several years, including this newcomer. A 236 carat yellow-brown crystal which is the largest colored rough diamond ever extracted in Russia.
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IGI Jewelry Design Contest in National Jeweler
“IGI Is Holding a Jewelry Design Contest And It’s Free to Enter,” declares the headline of National Jeweler’s coverage of IGI’s “Collision and Fusion” Jewelry Design Contest. Fashion Editor Ashley Davis provides a concise overview in her article and, importantly, reiterates the event’s fundamental premise.
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RESOLVE and DDI merge to advance Responsible Sourcing
RESOLVE, an early pioneer in the area of environmental conflict resolution, and the Diamond Development Initiative (DDI), responsible for facilitating more efficient, formal and environmentally responsible approaches in the African diamond mining sector, will integrate their programs to strengthen their efforts going forward.
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Noblesse Oblige
No matter if I am Black, Crystal, White, Fire, Water or in a Matrix, depending on the basic color and in a decreasing progression of red, violet, orange, yellow, green, blue, indigo… The title of Noble Opal is the one that I deserved and I still deserve.
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Diamond miners & producers going carbon neutral
Several years ago industry giant DeBeers went on-record with plans to go carbon-neutral at some of its mines by 2022. Now nine of DeBeers’ sightholder-producers are pledging to work toward the same goal of carbon-neutrality.
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Everybody loves the BLUES
Maynard Ferguson had a different blues in mind when composing his jazz masterpiece for the 1993 album “It’s My Time,” but blue diamonds have a special appeal and character all their own. Like the call and response motifs which characterize blues jazz, blue diamonds seem to call out to each other in their individual but harmonious combinations of hue, tone and saturation.
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IGI gives advice in World Bride Magazine
Stacey Marcus recently offered a number of Trends and Tips on the Modern Way to find your Dream Diamond for World Bride Magazine. One of the experts approached for advice was Scott Friedman, Master Gemologist Appraiser with IGI North America.
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A Heart-to-Heart about these auction items
The July Sotheby’s Hong Kong Magnificent Jewels auction did not disappoint, in items offered or bids commanded. I thought I would share a few of my favorite jewelry items sold – and sprinkle in another genre or two, just for fun.
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Chicken cleaning and heat treatment. What?
Treatments have been used to enhance the appearance of gemstones since ancient times. The Egyptians, Greeks and Romans used dyes, coatings, oils and other methods to improve the color, durability and luster of their gemstones and pearls. But the most fascinating and fanciful tool used for enhancements may very well be the humble chicken.
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How the gemstone Color Universe works
Gemstones and fancy-colored-diamonds appear in all the colors of the rainbow, at different shades, with different intensities. Since the human eye can distinguish around 13 million shades and nuances of color, gemologists have developed a consistent method of mapping a gemstone’s proper position in the broad ‘Color Universe.’
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Trapiche gemstones and Carmel Sapphire
Have you ever heard of “trapiche” gemstones? Those elegant six- pointed stars, so unique, so rare, so peculiar, such as emerald-beryl, ruby-corundum and sapphire-corundum, garnet, tourmaline and chiastolite? What about Carmel Sapphire, never found before on the whole terraqueous globe
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Three cheers for America’s red, white and blue gemstones
Right now there are delicious hot-dog, hamburger, steak and brisket barbecues occurring across the USA. There are potato salads, crisps and coleslaw. There’s corn on the cob and baked beans. I am inspired to mark America’s birthday with the sparkle of three American gemstones, all local to the USA, in her three patriotic colors.
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What’s 150,000 times more rare than diamond?
An extremely rare variety of beryl which gets its red color from trace amounts of manganese, the Utah Geological Survey estimated that one crystal of red beryl is found for every 150,000 gem-quality diamonds. In 2006 the Jewelers Association designated red beryl as the world’s rarest colored gemstone.
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