The luxury conglomerates faced a challenging Q3 amid geopolitical and economic tensions.
3 Moissanites With Fraudulent Inscriptions Submitted to GIA Lab
The stones were sent into the Johannesburg lab and researchers detailed their discovery in the fall issue of Gems & Gemology.

It is a first such discovery for the laboratory.
GIA reported on the finding in the fall 2020 issue of Gems & Gemology, in an article in the Lab Notes section authored by Sicebiso Hlatshwayo and Sally Eaton-Magaña.
The note specifically addressed the first of the three stones received, a 1.02-carat round brilliant recently submitted for a Diamond Grading report.
Standard testing showed the stone was not a diamond, and further tests proved it to be a synthetic (lab-grown) moissanite, Hlatshwayo and Eaton-Magaña wrote.
They noted simulants are “often” submitted to the lab for diamond grading but are easily rooted out using the standard grading process.
This is the first time, however, the lab has come across a fraudulent inscription on a diamond simulant, and the fake was apparent to graders for a number of reasons.
First, GIA checks all stones with a pre-existing inscription.
The report number on the 1.02-carat round brilliant moissanite belonged to an E-color natural diamond of the same carat weight graded in 2019.
The measurements of the stones, however, were “quite different” due to the fact that the two materials have a different specific gravity, Hlatshwayo and Eaton-Magaña wrote.
The specific gravity of diamond is 3.52 while moissanite’s is 3.22, which means that moissanite, any moissanite, has to be slightly larger than a diamond to equal its carat weight.
“Since the specific gravity of moissanite is smaller than diamond, it is less dense and needs to have a larger volume for the same weight,” GIA explained in an email to National Jeweler.
In addition, the font used for the inscription on the moissanite was “distinctly different” from GIA’s usual font and, while GIA does not assign clarity grades to lab-grown moissanite, the stone in question is equivalent to a VVS2, while the clarity grade on the report for the natural diamond is VVS1.
The lab note in the fall edition of Gems & Gemology did not provide details on the other two lab-grown moissanite submitted with fraudulent inscriptions, as they did not come into the lab until after the article was written.
The Latest

The struggling diamond mining company, which owns the historic Cullinan mine, has launched a rights issue to raise about $25 million.

The book details the journey of watches as symbols of hard-earned success in hip-hop for artists like 2Pac, Jay-Z, and more.

As the holiday season quickly approaches, consider stocking one category that sometimes gets overlooked: earrings.

Alexis Vourvoulis, who most recently worked at Tiffany & Co., brings more than two decades of jewelry experience to her new role.


The superstar’s August engagement put the stamp of approval on an already hot engagement ring trend.

Retailers should offer classic styles with a twist that are a perfect fit for layered looks, experts say.

You deserve to know what you are selling–to protect your customers as well as your business and your reputation.

The nearly 7-carat fancy vivid purplish pink diamond could sell for around $9 million.

The retailer’s new collection of engagement rings and fashion jewelry is set with natural diamonds that are traceable via blockchain.

Chief Artistic Officer Nathalie Verdeille has reimagined the iconic design in both figurative and abstract creations.

Five dollars buys one vote toward an industry professional you want to see dressed up as a hero, or a villain, this Halloween.

Recently acquired by KIL Promotions, the November edition of the public show in San Mateo, California, will be held Nov. 7-9.

The stone’s two zones, one pink and one colorless, may have formed at two different times, the lab said.

Hollywood glamour meets Milanese sophistication in the design of Pomellato’s new store in Beverly Hills, California.

The Museum of Arts and Design's new exhibition features 75 pieces by the designer, best known for her work in the “Black Panther” films.

Making its auction debut, "The Glowing Rose" is expected to fetch $20 million at the November jewelry sale in Geneva.

They were attacked on Oct. 15, as approximately 40 miners without licenses marched on the mine’s gate.

It took the masked thieves less than 10 minutes to steal eight irreplaceable jewels from two display cases in the museum’s Apollo Gallery.

Gemologist Lauren Gayda has previously worked at The Clear Cut, Taylor & Hart, and Effy Jewelry.

In 2026, the jewelry retailer will celebrate a milestone only a small percentage of family-owned businesses survive to see.

The new showcase dedicated to Italian jewelry design is set for Oct. 29-30.

Take a gaze at the sky with this pair of platinum diamond-set star earrings with blue lace agate drops.

Jeffrey Zimmer's decades of leadership at Reeds Jewelers are defined by integrity, a love of sourcing gemstones, and a heart for community.

The new high jewelry design and production process takes 30 days or less from concept to completion, the auction house said.

The holiday catalog for 2025 features never-before-seen images of more than 100 one-of-a-kind masterpieces.

The brand has released a second installment of its collection of traditional and non-traditional commitment heirlooms.



















