Moti Ferder stepped down Wednesday and will not receive any severance pay, parent company Compass Diversified said.
Gemewizard Now Offers Online Education
The Gem Color Academy has kicked off with a colored stone grading course.

Ramat Gan, Israel—Gemewizard, which provides digital solutions for the analysis, description, pricing and trading of color in gemstones and colored diamonds, has launched a new educational arm.
The Gem Color Academy will provide professional-level knowledge and experience for the gem and jewelry industry.
Guy Borenstein, vice president and chief academic officer, said the company wanted to offer courses that gives the students “the extra mile they lack and almost always need in order to properly (and successfully) play in the real trade,” complimenting other gemological education by providing “added value in order to understand the market language and its know-how secrets.”
To launch, the academy has introduced a distance education course dedicated to colored gemstone grading.
Drawing from the company’s founders’ more than 40 years of gemological experience, the online course provides students with an in-depth understanding about the grading, evaluation and pricing of gems.
The Colored Stones Grading Course ($1,000) examines issues related to color, clarity, cut, geographical origin, treatments, optical phenomena and other attributes that define their quality and determine their value.
It focuses on the gemstones most commonly handled in the trade gem, including ruby, emerald, sapphire, aquamarine, alexandrite, garnet, spinel, tanzanite and tourmaline.
Students will be able to access hundreds of gem images and numerous educational videos online and participate in more than 100 interactive exercises in sorting, grading and pricing of gems, using digital master rulers.
The course also puts a strong emphasis on hands-on practice. Gemewizard will provide students with a mailed kit comprising 25 gem samples accurately depicting the most important shades in the colored gemstone range and a comprehensive set of Colored Stones Grading course notes.
Students are assigned to a specific class with its own teacher—experienced gemologists and educators—who assist them for the entire duration of the course, answering questions, checking assignments and examinations, and monitoring progress.
They also can communicate with colleagues in the class to swap insights, experience and knowledge.
“The goal we set ourselves in developing the course was that it should bridge the gap between theoretical gemology and commercial reality, where sometimes subtle variances in gem properties translate into substantial differences in value,” said Menahem Sevdermish, president of Gemewizard and a founder of the Gem Color Academy.
“Professionals need to understand how color is derived and how it should be measured and defined in a wide variety of gemstones, and how that, together
Students will receive a one-year subscription to the full suite of Gemewizard products, including GemePrice, an online pricing system and price list for gemstones and diamonds.
A Colored Diamonds Grading Course will launch next month. The Gem Color Academy will announce other new courses soon.
Borenstein told National Jeweler the Gem Color Academy is also in the process of signing agreements with colleges around the world to offer these courses in an on-site class format and in other languages, such as Spanish and French.
The first agreement with a college in South Africa will be announced soon. Other colleges in the U.S., Europe and Asia are in the agreement finalization step and will be announced in the following weeks.
For more information or to enroll, visit GemColorAcademy.com.
The Latest

Lichtenberg partnered with luxury platform Mytheresa on two designs honoring the connection between mothers and daughters.

The miner announced plans to recommence open-pit mining at Kagem.

Gain access to the most exclusive and coveted antique pieces from trusted dealers during Las Vegas Jewelry Week.

Michel Desalles allegedly murdered Omid Gholian inside World of Gold N Diamond using zip ties and then fled the country.


Associate Editor Lauren McLemore shares her favorite looks from a night of style inspired by Black dandyism.

Sponsored by Instappraise

Supplier Spotlight Sponsored by GIA

CEO Beth Gerstein discussed the company’s bridal bestsellers, the potential impact of tariffs, and the rising price of gold.

The brand’s first independent location outside of Australia has opened in Beverly Hills, California.

Cathy Marsh will lead the jewelry company’s efforts in the upper Midwest and western United States.

The company has multiple strategies for dealing with tariffs, though its CEO said moving manufacturing to the U.S. is not one of them.

Connecting with your customers throughout the year is key to a successful holiday marketing push.

Its commercial-quality emerald sale held last month totaled more than $16 million, up from about $11 million in September 2024.

National Jeweler Editor-in-Chief Michelle Graff joined Michael Burpoe to talk tariffs, consumer confidence, and the sky-high price of gold.

Designer Lauren Harwell Godfrey made the piece as an homage to the 2025 gala’s theme, “Superfine: Tailoring Black Style.”

Expanded this year to include suppliers, JA’s 2025 list honors 40 up-and-coming professionals in the jewelry industry.

Located in Fort Smith, it’s the Mid-South jeweler’s first store in Northwest Arkansas.

The episode about the family-owned jeweler will premiere May 17.

The Houston-based jeweler’s new 11,000-square-foot showroom will include a Rolex boutique.

The turquoise and diamond tiara hasn’t been on the market since it was purchased by Lord Astor in 1930.

“The Duke Diamond” is the largest diamond registered at the Arkansas park so far this year.

The childhood craft of making dried pasta necklaces for Mother’s Day is all grown up as the 14-karat gold “Forever Macaroni” necklace.

Set with May’s birthstone and featuring an earthworm, this ring is a perfect celebration of spring.

“Bridal 2025–2026” includes popular styles and a dedicated section for quick pricing references of lab-grown diamond bridal jewelry.

Though currently paused, high tariffs threaten many countries where gemstones are mined. Dealers are taking measures now to prepare.

Located in Miami’s Design District, the 4,000-square-foot store is an homage to David and Sybil Yurman’s artistic roots.