Moti Ferder stepped down Wednesday and will not receive any severance pay, parent company Compass Diversified said.
Sotheby’s Takes 500-Page Jewelry Reference Book Digital
“Understanding Jewellery” is available now in an app for tablets, offering an in-depth look at jewelry and gemstones from the 18th century to the present.

London—Thirty years after the release of the “Understanding Jewellery” reference book, Sotheby’s is making all the information plus some available digitally via a new app.
Sotheby’s specialists David Bennett and Daniela Mascetti wrote the original 500-page resource, which offers a look at the history, styles, and craft of jewelry from the 18th century to the present for professionals, collectors and enthusiasts.
The app features the full content of the book, plus new high-resolution images of approximately 1,000 pieces of jewelry in a visual library, as well as updated news and auction highlights.
It makes the information available in an interactive way, incorporating features like a search filter designed to create a seamless user experience, Sotheby’s said. The app can be used to identify gemstones and learn about the evolution of jewelry over two centuries.
Sotheby’s said the education app will continue to expand, with future developments including promotions of Sotheby’s’ events, fairs, and exhibitions.
It constantly will be updated with videos, images, and descriptions of sale highlights chosen by Bennett and Mascetti from upcoming jewelry auctions, accompanied by their personal comments and opinions.
It also will expand to include social features, allowing users to share images and text from within the app via email, message or Airdrop, and eventually allowing users to create their own virtual collection of jewelry and add personal comments.
“Understanding Jewellery” is available for $19.99 in the Apple Store and Google Play store. Due to the large amount of material and high-resolution images, it’s only designed for tablets, not computers or smartphones.
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.

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 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.

May babies are lucky indeed, born in a month awash with fresh colors and celebrated with one of the most coveted colored gemstones.

The deadline to apply for the Seymour & Evelyn Holtzman Bench Scholarship is June 12.