Grading

Full Disclosure at Your Fingertips

Brought to you by

Full Disclosure at Your Fingertips

Distinguishing natural diamonds from laboratory-grown stones – now more available than ever – has been difficult for jewelers. Until now.

86a73645cce99b175f29c78bd722501a.jpg

Brought To You By GIA


The Growing Popularity of Laboratory-Grown Diamonds

Laboratory-grown diamonds are increasingly available in greater quantities, higher quality and new colors at price points that many find attractive. It is no wonder then that laboratory-grown diamonds are a growing presence in the marketplace, with more and more being sent to GIA laboratories for evaluation and grading.
 
These diamonds play an important role in the marketplace. However, laboratory-grown and natural diamonds have vastly different origin stories, and consumers purchase each with different considerations in mind. Whatever their preference, consumers deserve to know what they’re purchasing. It is with consumer protection in mind that we, as the most trusted organization in diamond research and diamond grading, strive continually towards advancements in diamond detection techniques and technology.  
 

The Challenge of Distinguishing Laboratory-Grown from Natural Diamonds

Recently, GIA encountered several instances of laboratory-grown diamonds inscribed with report numbers belonging to natural diamonds. These laboratory-grown diamonds had 4Cs grades and measurements closely resembling those listed on accompanying natural diamond reports. Driven by our mission to protect consumers, GIA performs detailed and thorough analysis and overwrites these counterfeit inscriptions with Xs, issues a GIA Laboratory-Grown Diamond Report, and inscribes the stone with the new report number and the phrase ‘Laboratory-Grown.’ 
 
These occurrences demonstrate the need for reliable ways to identify laboratory-grown diamonds. Impossible to differentiate from natural diamonds with the unaided eye, they typically require advanced testing in gemological laboratories to determine their identity. 
 
Image For Advertorial NJ_1872x1052.jpg

Identify Diamonds In-Store with the GIA iD100® 

In response to the needs of the trade, GIA created the GIA iD100®  – a convenient desktop instrument that can distinguish natural diamonds from laboratory-grown diamonds, diamond simulants and some treated diamonds in under two seconds with 100% accuracy. With this small yet powerful instrument, you can test diamonds, both loose and mounted, from the convenience of your own store. It can also be used for demonstrations to increase client confidence. 
 
Highly adaptable, the GIA iD100 is able to test colorless to near-colorless, blue-to-green and brown diamonds, as well as pink diamonds if the GIA iD100 Pink Diamond Software Upgrade is added. The Pink Diamond Software Upgrade utilizes the advanced spectroscopic technology in the device combined with GIA's diamond identification research to distinguish natural pink diamonds from laboratory-grown (HPHT and CVD) diamonds, simulants and natural diamonds whose pink color is introduced by treatments involving irradiation and annealing. 

To use, simply point its probe at a stone to receive a result; the probe can be manipulated to reach every diamond in mounted jewelry and can read stones as small as 0.9mm in diameter. Results are easy to read. You don’t need to interpret graphs, colors, reference charts or data to know whether your stone is natural. In just two seconds, you get a simple “Pass” for natural diamonds and “Refer” for stones that need further testing.
 
In the event that your stone needs further testing, let the experts at GIA tell you the identity of your stone. If the stone proves to be laboratory-grown, our graders can issue a GIA Laboratory-Grown Diamond Report. Our new, updated Laboratory-Grown Diamond report is fully digital and provides detailed color and clarity specifications and a plot of the laboratory-grown stone’s clarity characteristics, so that you know the quality of your stone. The report also states the stone’s growth method (high-pressure, high-temperature (HPHT) or chemical vapor dipositive (CVD)), as well as any post-growth treatments.
 

The Innovative Research Behind the GIA iD100

At GIA, we are uniquely positioned to offer this advanced diamond-detecting instrument due to our over sixty years of diamond research, our insight from grading millions of diamonds every year, and the information we collect from growing CVD diamonds in-house for research purposes. Our laboratory has performed systematic studies of natural diamonds, laboratory-grown diamonds, colored diamonds and simulants, so that we are familiar with each and can ensure accurate stone identification.
 
The technology of the GIA iD100 sets this device apart from other diamond testing devices. Rather than using UV light, which can lead to false readings, the GIA iD100 uses highly-sensitive spectroscopy technologies to detect trace amounts of lattice defects in diamonds – one of the most accurate and advanced techniques available to determine if a stone is natural. The portable device is non-destructive to stones and was created to be fast, accurate, affordable, the ultimate diamond-detecting triple-threat. It encapsulates GIA’s diamond-detecting expertise and technology for the best price in its class—$5,495.00. According to third-party testing results, the iD100 has a 0% false positive rate, meaning it will never pass a laboratory-grown diamond as a natural diamond. With the GIA iD100, you can be confident about the identity of the jewelry that you acquire and sell every day.  
 
Learn more at GIA.edu/id100.
 

The Latest

Image of Winona Ryder and Iman from Pandora’s Be Love marketing campaign
FinancialsAug 15, 2025
In Q2 Results, Pandora Talks Tariffs, Q4 Plans

The company had a solid second quarter, with sales of non-charm jewelry outpacing sales of pieces in its core collections.

Taylor Swift Etho Maria ruby earrings The Life of a Showgirl TS12
EditorsAug 15, 2025
Piece of the Week: Etho Maria’s Showgirl-Approved Ruby Drop Earrings

Taylor Swift dons the vibrant pair in new promotional imagery for her upcoming album, “The Life of a Showgirl,” set to release in October.

Audemars Piguet Starwheel Watch
WatchesAug 15, 2025
Audemars Piguet Acquires Majority Stake in Manufacturer

Its investment in micromechanics expert Inhotec will preserve skills essential to the watchmaking industry as a whole, said the company.

rio-article photo-diamond.jpg
Brought to you by
Taking the Moment Head On: How Rio Grande Champions the Present & Future of Fine Jewelry

As a leading global jewelry supplier, Rio Grande is rapidly expanding and developing new solutions to meet the needs of jewelers worldwide.

Nicolette Bianchi
MajorsAug 15, 2025
Rio Grande Names New Marketing Director

Nicolette Bianchi joins the wholesale provider with more than 15 years of cross-industry experience in marketing and product development.

Weekly QuizAug 15, 2025
This Week’s Quiz
Test your jewelry news knowledge by answering these questions.
Take the Quiz
Pippa Small Myanmar Fish Cluster
CollectionsAug 14, 2025
In Midst of ‘Sardine Girl Summer,’ Pippa Small Looks to ‘Flounder Fall’

Her new “Ocean” collection was inspired by Myanmar’s traditional articulated fish jewelry, with depictions of flounder, catfish, and more.

Casio America CEO Yusuke Suzuki
MajorsAug 14, 2025
Casio America Names New CEO

Longtime Casio executive Yusuke Suzuki is the new president and CEO of Casio’s U.S. subsidiary.

an instructor and a student in a bench jewelry classroom
Brought to you by
Investing in the Next Generation of Bench Jewelers

The Seymour & Evelyn Holtzman Bench Scholarship from Jewelers of America returns for a second year.

LA Trading Day
SourcingAug 14, 2025
West Coast Orgs to Host Trading Event, Mixer in LA

The full-day sourcing and networking event, slated for Aug. 18, will be followed by the fifth annual Mega Mixer Summer Soirée.

Cristiano Ronaldo and Stephanie Gottlieb Ring
TrendsAug 13, 2025
Cristiano Ronaldo Proposes With Gigantic Oval-Cut Diamond

Model Georgina Rodríguez received a rock of an engagement ring, with her diamond estimated to be 35 carats, experts say.

International Colored Gemstone Association logo
SourcingAug 13, 2025
ICA Names 2025 Board of Directors

The board elected 9 new directors at its recent ICA Congress in Brazil.

Whiskey Barrel Ring
TrendsAug 13, 2025
Colorado Jeweler, Whiskey Maker Collab on Ring Giveaway

Three winners will receive a custom ring from Honest Hands Ring Co. inlaid with a piece of history from Denver-based distillery Stranahan’s.

People shopping in a mall
SurveysAug 13, 2025
These Are The 25 Hottest Retailers, Says NRF

JD Sports and Wawa were among the fastest-growing retail companies in the U.S. last year.

Columbia Gem House Winza sapphires and rubies
SourcingAug 13, 2025
Columbia Gem House Launches Winza Sapphires, Rubies

The new inventory, all untreated, features vibrant hues and unique bicolor combinations.

Gemfields Faberge
SourcingAug 12, 2025
Gemfields Sells Fabergé for $50M

Acquired by a tech investor, the historic brand will continue to focus on jewelry, accessories, and timepieces.

Shipping containers on a ship
Policies & IssuesAug 12, 2025
Higher Tariff on Chinese Imports Paused for 90 Days, Trump Says

President Donald Trump issued an executive order extending the pause on higher tariffs to November as negotiations with China continue.

Jacquie Aiche Thunderbird Slab Collection Campaign
CollectionsAug 12, 2025
Jacquie Aiche’s New Collection Harnesses the Energy of the Thunderbird

The “Thunderbird Slab” collection features a thunderbird motif as a symbol of power, protection, and boundless possibility.

Duvall O’Steen and Jen Cullen Williams
ColumnistsAug 12, 2025
Creative Connecting: How to Take a Better Headshot

Columnists Jen Cullen Williams and Duvall O’Steen share tips on how to elevate your professional image.

Vigil for slain Wheat Ridge, Colorado jeweler Peter Damian Arguello
CrimeAug 11, 2025
Man Convicted of First-Degree Murder in Death of Colorado Jeweler

Peter Damian Arguello, a jeweler in the Denver suburb of Wheat Ridge, was found dead inside his store in November 2023.

Lisa Bridge
IndependentsAug 11, 2025
Lisa Bridge to Depart Ben Bridge Jeweler

The retailer, owned by Berkshire Hathaway, is becoming part of the Berkshire Hathaway Jewelry Group with Helzberg.

Bethenny Frankel
Events & AwardsAug 11, 2025
Bethenny Frankel to Give Keynote at CBG’s Experience Show

The Continental Buying Group’s 2025 Tampa Experience Show is slated for Sept. 8-10.

Nora Kühner fashion design consulting trend forecast colors 2027
EditorsAug 11, 2025
The Colors Expected to Be On-Trend in a Couple Years

Associate Editor Lauren McLemore recently attended a fabrics trade show where a trend forecaster shared her predictions for summer 2027.

Brilliant Earth Jolie Mosaics engagement ring
FinancialsAug 08, 2025
Brilliant Earth’s Q2 Sales Up 3% as Engagement Ring Sales Rise

The company raised its full-year sales guidance while noting it has not yet assessed the potential impact of the latest tariff news.

Jewellers for Hope charity event
Events & AwardsAug 08, 2025
GJEPC’s Jewellers for Hope Celebrates 10 Years of Fundraising

The organization has raised more than $1.3 million for charity since its inception.

Rahaminov Diamonds Emerald-Cut Diamond Bezel Bangle
TrendsAug 08, 2025
Piece of the Week: Rahaminov Diamonds’ Bezel Bangle

The brand’s latest iteration of a bezel-set diamond bangle features clean lines and a timeless design for a new modern silhouette.

Black and white photo of Tony Bennett near a microphone
WatchesAug 07, 2025
Bulova’s New Collection Honors Tony Bennett

The first watch in the series commemorates his participation in the Civil Rights movement, marching from Selma to Montgomery in 1965.

Sapphire page in Chatham’s “Ultimate Lab-Grown Catalog”
Lab-GrownAug 07, 2025
Chatham Releases Catalog for Loose Lab-Grown Gemstones

The catalog contains a complete listing of all the loose gemstones in stock, as well as information about the properties of each stone.

×

This site uses cookies to give you the best online experience. By continuing to use & browse this site, we assume you agree to our Privacy Policy