A matching pair of 18.38-carat, D-color diamonds from Botswana’s Jwaneng mine sold for $3.3 million, the top lot of the jewelry auction.
Lab Takes ‘Inside Out’ View of Gemology with New Book
Lotus Gemology takes a “humanistic approach,” interweaving photos of locations, people and cultures with microscopic details of colored stones.

Bangkok—It can be so easy to look at a gem or piece of jewelry and forget how many people were involved in bringing it to market.
Now, one Bangkok lab is releasing a book to remind the world of the human aspect behind colored gemstones.
Richard W. Hughes, Wimon Manorotkul and Billie Hughes of Bangkok lab Lotus Gemology have penned “Inside Out – Gemology Through Lotus-Colored Glasses” to offer another perspective on gemology.
Founded in 2014, Lotus Gemology specializes in the identification and characterization of colored gemstones. The team has authored or co-authored more than 200 papers and 10 books on various aspects of gemology.
“Inside Out” is their platform for sharing the “humanistic gemology” they see through their work, doing so through stunning imagery.
“Rather than the misery that fills our newspapers, we meet people who, despite their sometimes meager wealth, never fail to offer us graciousness and hospitality,” Billie Hughes writes in one of the book’s introductions. “As you look at the faces in this book, we hope you will sense not just the human struggle, but also optimism. Beneath the outside, there is an inside core of hope.”
Richard Hughes and Manorotkul add in theirs: “This volume of images bears not just testimony to the diversity of our world, but also to a hidden realm within the gemstones we seek.”
The 152-page book is a microcosm of the gemstone world, providing photographs of the humans and landscapes involved and interweaving them with the minute details of gemstones all the way down to the inclusions.
For example, a 2013 photo of a sapphire miner in Thailand is followed by a photomicrograph of rutile silk in a Burmese ruby.
Later, a photo of a sapphire miner taken in 2010 in Madagascar comes just after a shot of a Burmese spinel octahedra.
“Inside Out” features bilingual text in English and Simplified Chinese.
Lotus Gemology is now accepting pre-orders; books will begin shipping from Bangkok in October.
The standard edition is priced at $100 plus shipping and handling.
The lab also offered a special limited edition of 50 copies, signed by the three authors, numbered and featuring a slipcase. Those were priced at $200 plus shipping and handling but have already sold out.
The Latest

Sponsored by A Diamond Is Forever

It was the second auction appearance for the fancy vivid blue-green diamond, which sold for $7.8 million at Christie’s Geneva 12 years ago.

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

Members of the U.S. Marshals Task Force took a 22-year-old man into custody. He was charged with tampering with evidence.


While the overall number of crimes was down, there were more incidences in which robbers pulled out guns, mace, or rammed cars into stores.

Jack Sutton Fine Jewelry is closing its store inside the downtown shopping center after 40 years in business.

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

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

Peter Smith gives tips on leading meetings, developing marketing, and making trade show appointments in the age of short attention spans.

The 11-piece “Medallions” capsule collection features five motifs: a crying eye, a heart on fire, a spiral, a flower, and a swallow.

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

The partners have announced the second cycle of the program, which has expanded to include a $25,000 student scholarship.

The owners of Staats Jewelers are heading into retirement.

Jeffrey Gennette, who retired in 2024 after 41 years with Macy’s, is the newest member of the jewelry retailer’s board of directors.

May babies are lucky to have emeralds, a gemstone admired for centuries, as their birthstone, writes Amanda Gizzi.

The new module allows retailers to plan, promote, and measure the success of events from a single dashboard.

NDC said in an open letter that Pandora’s statements about the carbon footprint of lab grown versus natural diamonds are inaccurate.

The diamantaire and industry leader succeeds Feriel Zerouki and said he will focus on being a “champion” for natural diamonds.

She wore our Piece of the Week, Glenn Spiro’s “Old Moghul Golconda” earrings, featuring fancy brown-yellow diamonds totaling 51.90 carats.

Two pieces were named “Best in Show,” one from the retail category and one from the supplier category.

The jewelry retailer noted resilience among its higher-end customers while demand softened for its lower-priced offerings.

Led by the 6.59-carat sapphire, the sale garnered $9.7 million, a record total for a Heritage jewelry auction.

In his new role, sales specialist Billy Welshoff will focus on the eastern United States.

José Gaztelu has been promoted to the role, which has been vacant since last year.

It has also opened the application period for the Seymour & Evelyn Holtzman Bench Scholarship through June 30.

The owner of the Ekati mine, which opened in 1998, has filed for insolvency protection amid the significant decline in diamond prices.
























