Photo credit: IGI Worldwide

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.


IGI welcomes GIA and AGS to lab-grown diamond grading

Earlier this month GIA and AGS announced policy changes regarding lab-grown diamonds. IGI is proud to see other organizations adopt our long-held philosophy regarding the dual-channel legitimacy of natural and lab-grown diamonds, and believe professionals and consumers alike will benefit from the increased transparency in our industry.

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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.

Photo credit: Wikipedia

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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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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Science and Art: From brightest to blackest carbon

The "disappearing diamond" is a 16.87 carat natural Fancy Vivid Yellow SI1 Radiant shape, coated by carbon nanotube technology which absorbs more than 99.96% of light and is the blackest material in existence.

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Image credit: ALROSA

Rough diamond sales go digital

Rough sellers are partnering with technology providers to facilitate digital-scans, videos and potential polishing plans for rough diamonds to their customers. Originally intended to facilitate pre-selection of choices ahead of traditional tenders, remote-purchasing has now become an option.

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Monday mabe’ musings: Pearls of wisdom

Not everyone understands the importance of a transparent, accurate report of the gemological materials included in jewelry. And yet, such reporting not only advances your competitive position. It also serves to protect against legal disputes and demonstrates corporate social responsibility.

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Photo credit: ALTR

Diamond teleportation? Beam me up, Scotty!

Did you know whatever device you're using to read this post - mobile, tablet or desktop - wouldn't exist without lab-grown diamonds? Did you know diamonds are being used for medical imaging, quantum entanglement and (you read it right) teleportation? Read on.

Photo credit: ALROSA

A loose diamond within a diamond

Nature never stops providing the extraordinary, unexpected and unique. This adamantine oddity was unearthed at an open-pit mine 200 miles north of Nyurba, Russia last October. Specialists immediately passed it to ALROSA's Research and Development Geological Enterprise.

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