Supplier Spotlight Sponsored by GIA
GIA Detects 101 Undisclosed Synthetics in Melee Parcel
Nearly one-third of the diamonds in a parcel screened by the GIA’s Mumbai lab were found to be lab-grown diamonds.
Mumbai--The Gemological Institute of America recently screened a parcel of diamond melee and found that nearly a third of the stones were undisclosed synthetics.
The GIA confirmed to National Jeweler that of a parcel containing 323 diamonds, 101 were lab-grown stones. The parcel had been submitted for screening to the GIA’s Mumbai lab and the diamonds were detected using the GIA’s new melee diamond analysis service.
The GIA launched its melee diamond analysis service in December last year. The fully automated system screens between 1,800 and 2,000 stones an hour, separating natural, untreated stones from treated and lab-grown ones, both HPHT (high-pressure, high-temperature treatment) and CVD (chemical vapor disposition).
The service also separates diamonds by color range.
The 101 synthetic diamonds caught in Mumbai were grown using the CVD process, the GIA said.
For its melee analysis service, the GIA accepts round D to Z diamonds from 0.90 to 4.00 mm in size, or roughly 0.005 to 0.25 carats.
Since introducing the melee screening service in most of its labs worldwide, this is the first time the GIA “has seen such a significant percentage of CVD melee mixed with natural melee,” a spokesperson told National Jeweler.
The GIA declined to comment when asked if they believed the inclusion of the undisclosed lab-grown stones was intentional or if they would pursue any type of action against the submitter.
The detection of lab-grown melee is one of the biggest challenges facing diamond grading labs today, as they work to develop machines that can quickly and cost effectively screen small stones.
In addition to the GIA’s recently launched melee screening service, De Beers just introduced the second, substantially cheaper version of its Automated Melee Screener.
The Latest
Sales will be paused while the relocation takes place over the next few months.
“SIS x MISA Denim and Diamonds” is a collaboration between the designer and celebrity stylist Misa Hylton.
Meet Ben Claus—grand prize winner of For the Love of Jewelers 2023 Fall Design Challenge.
The retailer is moving to a newly designed space in the same shopping center.
Gifts that are unique and thoughtful are top of mind this year, according to the annual survey.
The necklace is featured in the brand’s “Rebel Heart” campaign starring Adam Levine and Behati Prinsloo.
With Ho Brothers, you can unlock your brand's true potential and offer customers the personalized jewelry experiences they desire.
The two organizations will host a joint event, “Converge,” in September 2025.
Big changes appear to be on the horizon for the diamond miner and its parent company, Anglo American.
Padis succeeds Lisa Bridge, marking the first time the organization has had two women board presidents in a row.
Jesse Cole, founder of Fans First Entertainment, shared the “five Es” of building a fan base during his AGS Conclave keynote.
The Royal Oak Perpetual Calendar "John Mayer" was celebrated at a star-studded party in LA last week.
The announcement came as the company reported a 23 percent drop in production in Q1.
The three-time Pro Bowler continues to partner with the retailer, donating to a Detroit nonprofit and giving watches to fans.
A double-digit drop in the number of in-store crimes was offset by a jump in off-premises attacks, JSA’s 2023 crime report shows.
Inspired by the Roman goddess of love, the designer looked to the sea for her new collection.
The luxury titan posted declining sales, weighed down by Gucci’s poor performance.
The selected nine organizations have outlined their plans for the funds.
The mining company’s Diavik Diamond Mine lost four employees in a plane crash in January.
The crown introduced a dozen timepieces in Geneva, including a heavy metal version of its deep-sea divers’ watch.
Emmanuel Raheb recommends digging into demographic data, customizing your store’s communications, and retargeting ahead of May 12.
Located in the town of Queensbury, it features a dedicated bridal section and a Gabriel & Co. store-in-store.
A 203-carat diamond from the alluvial mine in Angola achieved the highest price.
The “Rebel Heart” campaign embodies rebellion, romance, and sensuality, the brand said.
Editor-in-Chief Michelle Graff shares the standout moments from the education sessions she attended in Austin last week.
The overhaul includes a new logo and enhanced digital marketplace.