AuctionsJun 26, 2026
‘Hogback’ Diamond Ring Finds a New Home A ring set with “hogback” diamonds, an early stone cut dating to around the 16th century, sold for more than $20,000 at a U.K. auction.
GradingJun 26, 2017
GIA Selling Mounted Gem Testing Device at a Discount
The iD100, which is used to identify lab-grown diamonds even when they’re set in jewelry, is available for $3,995--for now.
The GIA is selling its new GIA iD100, which was created to screen for man-made diamonds in finished jewelry, for $3,995 through the end of the month.
Hong Kong--The Gemological Institute of America’s new testing device that can be used on both loose and mounted diamonds, the GIA iD100, is available at a lower price through the end of the month.
The GIA unveiled a prototype of the then-unnamed device at a conference on man-made diamonds held in India in April and then debuted it at the JCK Las Vegas show in early June.
The desktop device, which is pictured above, uses advanced spectroscopic technology to identify natural colorless diamonds that are at least 0.9 mm (approximately 0.005 carats) or bigger. It can be used on loose stones or diamonds that already have been mounted into pieces of jewelry.
Here’s how it works.
After turning on the GIA iD100, the user presses “Calibrate” on the touch screen. He or she then uses the probe to illuminate each stone, and the device gives both a visual and an audio response, either pass or refer. It takes one to two seconds per stone.
By identifying the natural diamonds (the stones that come up as “pass”), the instruments allows the user to pick out the stones that are either diamond simulants (CZ or moissanite) or grown by man using either the HPHT or CVD process (the stones that come up as “refer”). These then can be sent to a lab for further testing.
The GIA said the iD100 will refer 100 percent of diamonds that are either man-made or simulants.
The $3,995 price (which includes a $500 deposit to be made at the time of purchase) is available to everyone until the end of June. Those interested in placing an order should contact the GIA at instrumentsupport@gia.edu.
After June 30, the price of the iD100 will go up. A GIA spokesman said Friday that the lab has not yet set a final price for the instrument, though it has been described as being in the “$5,000 range.”
Also at JCK Las Vegas and the Hong Kong jewelry show, the lab demonstrated GIA M2M, a service and digital platform that shows consumers the journey of his or her diamond.
M2M is a digital storytelling platform and app that provides a look at all the chapters of a diamond’s story--from the mine to cutting to market.
More on Grading
The Latest
CollectionsJun 26, 2026
Strength Is Sharpened Into Beauty in Kris Averi’s ‘Prism Thorn’ RingThe rainbow version of the ring, our Piece of the Week, features angel-cut, octahedral lab-grown sapphires designed to be worn as armor.
MajorsJun 26, 2026
Rembrandt Charms Debuts ‘Charms That Give Back’The new initiative donates a portion of the proceeds from select charms to charitable causes.
Brought to you by
Wedding Band Trends 2026: Personalization Takes Center StageColored gemstones, artisan finishes, mixed metals, and meaningful details are shaping demand in bridal jewelry.
TrendsJun 26, 2026
Bernard James Celebrates Knicks’ Win with RingThe Brooklyn-based jeweler created a limited-edition version of its “Aura” eternity band, set with gemstones in the team’s colors.
Weekly QuizJun 25, 2026
This Week’s QuizTest your jewelry news knowledge by answering these questions.
SourcingJun 25, 2026
ICA Names Brandee Dallow as CEODallow will lead the International Colored Gemstone Association, effective July 6.
EditorsJun 25, 2026
Out & About: How Jewelers Mutual, SCAD Are Tackling the Bench Jeweler ShortageSenior Editor Lenore Fedow headed to Savannah to learn more about the 10-year, $10 million partnership between JM and the art school.
Brought to you by
Building the Future of Jewelry Retail: DCA Expands Education, Leadership Development, and Workforce SolutionsDCA is preparing the next generation of professionals by supporting workforce development, leadership growth, and career advancement.
CollectionsJun 25, 2026
Mejuri Experiments With SteelIts new capsule jewelry collection features gold-finished stainless steel pieces designed for a maximalist look without a luxury price tag.
Events & AwardsJun 25, 2026
Watches & Wonders Announces 2027 DatesThe week-long event in Geneva is slated for April 2027.
SourcingJun 25, 2026
Annie Doresca, Mark Smelzer, Sara Yood Join Gem Legacy BoardThe three industry leaders bring financial, communications, and legal expertise to the nonprofit’s board of directors.
ColumnistsJun 24, 2026
The Revenue Hiding Between Your Counter and Your Online CartJewelers are missing out by not offering this one key add-on at the online point of sale, Emmanuel Raheb writes.
CollectionsJun 24, 2026
Greenwich St. Jewelers, Jewel Boxing’s Latest Drop Is On-TrendThe fourth collaborative collection from the retailer and jewelry content creator focuses on gemstone charms and strands of colorful beads.
Events & AwardsJun 24, 2026
AGTA Accepting Entries for Spectrum 2026This year’s AGTA Spectrum & Cutting Edge Awards will feature two new categories.
SourcingJun 24, 2026
Columbia Gem House To Offer Alexandrite Melee OnlineThe collection features traceable alexandrite from Brazil in calibrated sizes that is sorted by grade.
MajorsJun 24, 2026
CaratLane Names New Chief Sales OfficerDhaval Raja has been appointed to the role.
CollectionsJun 23, 2026
Francesca Villa Goes ‘On the Road’The capsule collection looks to vintage trunk pins that echo the spirit of speed, freedom, and the mythology of the American road trip.
SourcingJun 23, 2026
New Paraíba Tourmaline Source Reportedly Discovered in EthiopiaSSEF issued a notice about the potential new source of the sought-after gemstone, citing “credible reports” from trade sources.
MajorsJun 23, 2026
Etsy Says ‘Shop Other Jeffs’ This Prime DayAs Amazon Prime Day kicks off, Etsy is encouraging shoppers to support small businesses.
Events & AwardsJun 23, 2026
AGA Announces 2026 Scholarship WinnerCole Winward is the recipient of 2026 AGA Gemological Scholarship.
EditorsJun 22, 2026
15 Pieces of Jewelry That Brought Us Joy in Vegas Whether they evoked nostalgia, wonder, or laughter, these jewels put a smile on our faces.
Events & AwardsJun 22, 2026
Plans Announced for New Trade Show in BaselScheduled for April 2027, Basilia will be the first watch and jewelry trade show held in Basel since the collapse of Baselworld in 2020.
Events & AwardsJun 22, 2026
Gem Awards Opens 2027 Nomination PeriodSubmissions for the milestone 25th annual Gem Awards will be accepted across three categories from now through July 31.
WatchesJun 22, 2026
Snoopy Inspires New ‘Flying Ace’ Ball WatchThe beloved beagle dons his aviator outfit for the new Engineer Master II Snoopy Flying Ace timepiece.
AuctionsJun 18, 2026
Paraíba Tourmalines Sell for $3.4M at Sotheby'sThe recent high jewelry auction, which also featured the sale of a 10-carat blue diamond, was “a celebration of color.”
CollectionsJun 18, 2026
Michelle Obama Wears Almasika Earrings Symbolizing Feminine PowerShe wore the “Le Cauri Endiamanté” earrings, our Piece of the Week, in the Obamas’ first dual portrait for the Obama Presidential Center.
PodcastsJun 17, 2026
Episode 6: Las Vegas 2026-Trends, Traffic, Broken BathroomsCouture’s Michelle Orman joins Amanda Gizzi and Michelle Graff for this special post-Market Week episode of My Next Question.
