Auctions

182-Carat Paraíba-Type Tourmaline Heading to Auction in Hong Kong

AuctionsApr 07, 2025

182-Carat Paraíba-Type Tourmaline Heading to Auction in Hong Kong

Bonhams will offer the “Kat Florence Lumina” at its May 22 jewelry auction.

The Kat Florence Lumina
The “Kat Florence Lumina” is named for jewelry designer Kat Florence, who is married to Don Kogen, the gem hunter who found the original 830-carat rough crystal in Mozambique more than 20 years ago.
 Toronto—A Paraíba-type tourmaline weighing more than 180 carats is headed to auction at Bonhams Hong Kong next month.

The 181.61-carat unheated “Kat Florence Lumina” will go up for auction on May 22 as part of the auction house’s “Hong Kong Jewels and Jadeite” sale.

Bonhams said the gemstone is estimated to sell for HK$3 million to HK$5 million (approximately $386,100 to $643,500, or about $2,126 to $3,543 per carat). 

The gemstone was named after jewelry designer Kat Florence, who runs her eponymous jewelry brand.

Florence’s husband, gem hunter Don Kogen, found the gemstone and later cut it to fit her vision, according to a news release circulated by the brand last week.

When it was unearthed in the Mavuco district of Mozambique’s Nampula province in 2003, the rough crystal weighed 830 carats. 

Kogen estimated that it could be cut into a clean gem weighing more than 300 carats, the release states, but the stone sat untouched for many years.

This year, Florence began encouraging Kogen to revisit the crystal, and the initial result was a 315-carat gemstone.

While remarkable in size, the brilliance of the giant Paraíba-type tourmaline was compromised.  

Like many Paraíba, or Paraíba-type tourmalines, weighing more than 100 carats, it displayed “windowing,” a “flatness that dulls fire and life at the center of the gem,” the release states.

After deliberation and precision work by the brand’s cutting team, the stone was recut to its current weight, 181.61 carats.

 Related stories will be right here … 

According to the release, the gemstone is the largest known Paraíba-type tourmaline of its kind, “unheated, vividly saturated, and masterfully cut.” 

“The Kat Florence Lumina holds global recognition for its rarity, uniting size, color, clarity, and cut in a way never before seen in the world of Paraíba tourmalines,” the release states.

It has reports from Bellerophon Gemlab, American Gemological Laboratories, and Gübelin Gem Lab.

The stone will be exhibited in Taipei, Taiwan, on Apr. 11-13, Singapore on May 10-11, and Hong Kong on May 17-21, prior to being auctioned on May 22.

More details on the other lots in the Bonhams jewelry and jade auction will be available shortly.

The Latest

Jemma Wynne Forme Toggle Necklace
CollectionsJul 25, 2025
Piece of the Week: Jemma Wynne’s ‘Forme’ Necklace

Anne Hathaway was seen wearing the toggle necklace three times while filming scenes for “The Devil Wears Prada 2.”

September Hong Kong jewelry show
Events & AwardsJul 25, 2025
Pre-Registration Open for September Hong Kong Show

Jewellery & Gem World Hong Kong is scheduled for Sept. 15 to 21, and buyer pre-registration will be available until Sept. 7.

Bulgari Celestial Mosaic spinel necklace
FinancialsJul 25, 2025
LVMH Sales Slip in H1 Amid ‘Prevailing Uncertainties’

Renovations at Tiffany & Co. stores ate into profits in the company’s watch and jewelry division.

rio-article photo-diamond.jpg
Brought to you by
Taking the Moment Head On: How Rio Grande Champions the Present & Future of Fine Jewelry

As a leading global jewelry supplier, Rio Grande is rapidly expanding and developing new solutions to meet the needs of jewelers worldwide.

Mark and Candy Udell
Events & AwardsJul 24, 2025
2 Retailers to Receive 2026 Gem Award for Lifetime Achievement

Mark and Candy Udell of London Jewelers will receive the honor at the 24th annual Gem Awards next March.

Weekly QuizJul 25, 2025
This Week’s Quiz
Test your jewelry news knowledge by answering these questions.
Take the Quiz
De Beers marine mining vessel the SS Nujoma
SourcingJul 24, 2025
De Beers Sees Diamond Production Sink 36% in Q2

While struggles continue at the mining and trading end of the pipeline, consumer demand for diamond jewelry is holding steady.

Francesca Villa Fantasia Collection The Crab Pendant, The Mermaid Pendant, Keep Dancing Seahorse Pendant, Keep Dancing Ladybug Pendant, Secret Dreams Pendant, The Puffer Fish Takes Flight Pendant
CollectionsJul 24, 2025
Francesca Villa Adds Dimension to Her Intaglio Characters

The “Fantasia” jewelry collection turns the intaglio animals from her “Close Encounters” collection into 3D characters.

an instructor and a student in a bench jewelry classroom
Brought to you by
Investing in the Next Generation of Bench Jewelers

The Seymour & Evelyn Holtzman Bench Scholarship from Jewelers of America returns for a second year.

Breitling’s special Eagles Super Bowl watch on gold bracelet
WatchesJul 24, 2025
Breitling Drops Super Bowl Watch Honoring the Philadelphia Eagles

The special Classic Avi Chronograph 42 with an Eagles-green dial is limited to 59 pieces, a nod to the Super Bowl Philadelphia just won.

Stock image of crime scene tape
CrimeJul 23, 2025
JSA Warns of Violent String of Smash-and-Grabs in California

JSA has received reports of mobs swarming jewelry stores, driving cars into the storefront or smashing through the windows.

Silvia Furmanovich Kasmir Collection Carnelian Bracelet and Sketch
CollectionsJul 23, 2025
Silvia Furmanovich’s ‘Kashmir’ Collection Is a Tribute to Northern India

The “Kashmir” collection features centuries-old craft techniques made in collaboration with the region’s master papier-mâché artisans.

Bench jeweler holding a bracelet and a tool
IndependentsJul 23, 2025
Montreal’s Ecksand Eyes Move to SoHo

Creative Director Erica Bianchini shared why the jeweler is looking to expand into the U.S. and how it’s putting Canadian craftsmanship on the map.

LAFD Fire Station 44 and Fire Station 16
IndependentsJul 23, 2025
IJO Raises Nearly $37K for LA Fire Relief

Two Los Angeles Fire Department stations plan to use the donations to upgrade their equipment and tools.

A Vanitas by Hannah Martin and Guy Berryman Sothebys
CollectionsJul 22, 2025
Jewelry With a Rock ‘n’ Roll Aesthetic Heads to Sotheby’s London

Next week, the auction house will kick off a selling exhibition of jewelry by British artist Hannah Martin and Coldplay’s Guy Berryman.

Cover of the book “Flawless: Inside the Largest Diamond Heist in History”
SourcingJul 22, 2025
Antwerp Diamond Heist Documentary Coming to Netflix

“Stolen: Heist of the Century” is based on “Flawless,” the book about the middle-of-the-night theft, and will debut on Netflix in August.

Emmanuel Raheb
ColumnistsJul 22, 2025
The Gifting Gap: How to Market Jewelry Beyond the Holidays

Emmanuel Raheb shares the top five gifting moments outside of major holidays that jewelers should build marketing campaigns around.

NY Now
Events & AwardsJul 22, 2025
NY Now’s Summer Market Returns in August

The wholesale trade show’s Luxury Lifestyle section will showcase established and emerging jewelry designers.

Jeweler setting a diamond into a ring
MajorsJul 21, 2025
Rio Grande Expands Personalization Offerings

As demand for custom jewelry grows, the company is expanding its services to support retailers.

National Associate of Jewelry Appraisers Logo
Events & AwardsJul 21, 2025
NAJA’s 2025 ‘Ace It’ Conference To Go Virtual

The mid-year conference for jewelry and watch appraisers is slated for Aug. 9 to 10 on Zoom.

Jacquie Aiche graduated turquoise beaded necklace
TrendsJul 21, 2025
Amanda’s Style File: Graduated With Honors

Graduated stones make for elevated tennis-style pieces and dramatic statement necklaces.

24th Gem Awards Show Logo
Events & AwardsJul 21, 2025
Gem Awards Now Accepting Nominations for 2026

Nominations in the categories of Jewelry Design, Media Excellence, and Retail Innovation will be accepted through July 30.

Lewis Heyman
MajorsJul 18, 2025
Lewis Heyman on Sourcing Gemstones, Post-Retirement Plans

He retired last month after 28 years traveling the world to source the very best gemstones for his family’s jewelry business, Oscar Heyman.

CCWW Designs Multiple Shell Charm Necklace
TrendsJul 18, 2025
Piece of the Week: CCWW Designs’ Shell Charm Necklace

The charm necklace features six nautical charms of shells and coral that founder Christina Puchi collected on Florida’s beaches.

The Plumb Club board members
MajorsJul 18, 2025
Plumb Club Elects New Board Members

The organization elected its youngest vice president as it looks to draw in fresh talent.

Jewelry industry veterans Brad Campbell and John Liebler
TechnologyJul 18, 2025
Brad Campbell, John Liebler Join Clientbook’s Executive Team

Campbell joins the company as vice president of business development while Liebler is the new vice president of operations.

Silver, Gold, and Bronze Medals for Italy Olympic Winter Games
CollectionsJul 17, 2025
2026 Winter Olympic Medal Design Symbolizes Unity

The medals feature a split-texture design highlighting the Games’ first time being hosted by two cities and the athletes’ journeys.

vimeo screenshot.png
Supplier BulletinJul 17, 2025
The INSTORE Jewelry Show 2025: Your Holiday Preparations, All Wrapped Up!

Sponsored by The INSTORE Jewelry Show 2025

×

This site uses cookies to give you the best online experience. By continuing to use & browse this site, we assume you agree to our Privacy Policy