Jim Springer, owner of Dunkelberger’s Fine Jewelry, is heading into retirement.
Bonas Announces Dates for Next Colored Stone Tender
Concurrent with the February Bangkok and March Hong Kong trade shows, it will feature about 500 lots of colored gems.

Bangkok—Bonas has announced it will hold a gemstone tender concurrent with the February Bangkok trade show and March Hong Kong show.
For the first time, the company’s gemstone tender will be held alongside the Bangkok Gems & Jewellery Fair at the Impact Challenger Center. Viewings will be held from Tuesday, Feb. 25 to Thursday, Feb. 27 at the center.
Viewings will also take place during the Hong Kong Jewellery & Gem Fair from Sunday, March 1 to Wednesday, March 4 at the SkyCity Marriott Hotel.
The tender will feature about 500 lots of colored gemstones.
Key pieces include an 8.88-carat no heat ruby from Pakistan, a 14.90-carat no heat Burmese sapphire, a 23.74-carat no heat padparadscha sapphire and a 32.5-carat untreated cat’s eye chrysoberyl.
Full details of all goods will be available at the end of the month, including indicative prices for some key pieces in the tender, Bonas told National Jeweler.
The international tender house has been in the diamond business for more than 140 years, typically organizing rough diamond sales on behalf of diamond miners and providing consulting services along the diamond supply chain.
It began offering colored gemstone tenders in September 2017, with the first one held in Hong Kong.
This was followed by a second in Hong Kong a year later, then one in Bangkok in February 2019 and another in Hong Kong in September 2019.
Participation in the upcoming event is on a registration-only basis. It will be an online highest bid tender via BonasColouredGems.com.
The sale closes Thursday, March 5 at 9 a.m. Antwerp (CET) time (4 p.m. Hong Kong Time).
To register, contact the company by calling Henry Lam at +32 (3) 233 70 80 or emailing bonascolouredgems@bonasgroup.com.
The Latest

When conducting its May consumer confidence survey, The Conference Board asked extra questions about consumers’ budgeting strategies.

The “Tunnel” charm, our Piece of the Week, celebrates Pride Month with its design inspired by hope and the light at the end of the tunnel.

As gold prices rise, today’s retailers are looking for alternatives at prices that will appeal to wider audiences.

Up for auction at Sotheby’s, the collection of Tempelsman’s personal effects includes a Cartier Tank watch Jackie O. gifted him.


The Miami-based fine jewelry brand will host its first summer residency in the Colorado mountain town from June 5 to Aug. 23.

The organization also announced its international board of directors for the 2026-2027 term.

With the trade and customer trust in mind, GIA® developed NextGem™ – on-demand training designed specifically for retail.

Saks Global confirmed the closure this week, spelling the end for a store that’s been part of downtown Dallas for more than 100 years.

Smith discusses how managers should handle a top performer's exit, warning that a poor response could have a lasting impact.

The Gemological Institute of America is now a 30 percent stakeholder in Tracr, the De Beers-backed blockchain for diamonds.

The retailer is bringing Rolex Certified Pre-Owned watches to five U.S. cities in 2026 for collectors to see, try on, and purchase.

The actress and entrepreneur stars in the jeweler’s new campaign that celebrates life’s quiet moments.

The price of gold has risen, affecting the number of pieces designers make, the materials they use, and how they position themselves.

The jewelry retailer is zeroing in on Zales, Jared, Kay Jewelers, and Blue Nile as it looks to create unique brand identities for each.

Sotheby’s has appointed the former Phillips executive as its global head of private sales and retail in its watches division.

A private collection of five Paraíba tourmalines also will be up for sale at Sotheby’s High Jewelry auction in New York, scheduled for June 16.

From Gen Z’s view of luxury to “doom spending,” these are the six consumer trends to note this year.

The show started by honoring Mildred Marcano, ended with a tearful Beth Anne Bonanno, and recognized a dozen-plus designers in between.

The revamped online diamond marketplace will feature pricing intelligence and data-driven tools for more efficient buying and selling.

The miner said demand for higher-quality emeralds is stable, but there is notable caution in the market.

The “River of Heaven” necklace, our Piece of the Week debuting at Couture, combines 26 salt and pepper diamonds spaced by Tahitian pearls.

This year’s inductees include second-, third-, and fourth-generation jewelers.

The author, speaker, and entrepreneur will give his presentation, “Spiritual Billionaire,” on Saturday morning.

Three-time Grammy award-winning artist Nelly is set to perform at the annual event at Tao Beach on Sunday night.

Signet will integrate the online-only, natural diamond-focused jeweler into Blue Nile, which it wants to position as a higher-end retailer.

These up-and-coming jewelry brands are bringing their distinct aesthetic and unique point-of-view to the Design Atelier for the first time.






















