AuctionsMay 15, 2025
'The Mediterranean Blue' Diamond Sells for $21M at Sotheby’sAuctionsMay 27, 2025
182-Carat Paraíba-Type Tourmaline Sells for $487K
Recovered in Mozambique, “The Kat Florence Lumina” was part of Bonhams’ Hong Kong jewelry auction held last week.
“The Kat Florence Lumina,” a nearly 182-carat Paraíba-type tourmaline, sold within its estimated range at Bonhams Hong Kong on Thursday.
Hong Kong—A rare 181.61-carat Paraíba-type tourmaline from Mozambique sold for HK$3.8 million, or approximately $487,000, at Bonhams’ recent Hong Kong Jewels and Jadeite auction.
The internally flawless, unheated and untreated gemstone has a greenish-blue hue and was expected to fetch between HK$3 million and HK$5 million, meaning it sold at the low end of its estimated range.
It was named “The Kat Florence Lumina” after jewelry designer Kat Florence, whose husband, gem hunter Don Kogen, recovered the original 830-carat rough crystal in 2003.
Kogen originally estimated the rough could yield a clean stone of about 300 carats but left it untouched until Florence encouraged him to revisit the crystal this year.
The initial result was a 315-carat gemstone that was later recut to improve its brilliance, resulting in a cushion-shaped gemstone with a weight of 181.61 carats.
It is one of the largest Paraíba-type tourmalines of its kind, according to Bonhams.
The loose stone was accompanied by reports from four gem labs.
An appendix letter from American Gemological Laboratories states, “This impressive Paraíba-type tourmaline possesses a lovely bluish-green color, superior cutting, and a very high clarity that enhances its transparency … The exceptionally large size of this stone is representative of the finest material that has ever been recovered from the African deposits.”
It also received a 95.4-point rating from Gübelin, categorizing it as “exceptional.” Only 1 to 3 percent of stones submitted for testing annually receive this rating, the auction house noted.
Related stories will be right here …
The internally flawless, unheated and untreated gemstone has a greenish-blue hue and was expected to fetch between HK$3 million and HK$5 million, meaning it sold at the low end of its estimated range.
It was named “The Kat Florence Lumina” after jewelry designer Kat Florence, whose husband, gem hunter Don Kogen, recovered the original 830-carat rough crystal in 2003.
Kogen originally estimated the rough could yield a clean stone of about 300 carats but left it untouched until Florence encouraged him to revisit the crystal this year.
The initial result was a 315-carat gemstone that was later recut to improve its brilliance, resulting in a cushion-shaped gemstone with a weight of 181.61 carats.
It is one of the largest Paraíba-type tourmalines of its kind, according to Bonhams.
The loose stone was accompanied by reports from four gem labs.
An appendix letter from American Gemological Laboratories states, “This impressive Paraíba-type tourmaline possesses a lovely bluish-green color, superior cutting, and a very high clarity that enhances its transparency … The exceptionally large size of this stone is representative of the finest material that has ever been recovered from the African deposits.”
It also received a 95.4-point rating from Gübelin, categorizing it as “exceptional.” Only 1 to 3 percent of stones submitted for testing annually receive this rating, the auction house noted.
Bonhams’ 132-lot jewelry auction also included fancy colored diamonds and gemstones, as well as rubies, sapphires and emeralds from notable brands.
The top lot was a ring featuring a 1.08-carat internally flawless fancy vivid pink diamond that sold for HK$4.4 million, or approximately $568,000.
Also notable was the sale of a Cartier diamond and sapphire “Panthère” bracelet, which achieved HK$2 million, or approximately $260,000.
This fancy vivid pink diamond and diamond ring sold for more than $550,000.
A pair of Harry Winston diamond earrings with no-heat Burmese rubies weighing about 7 carats each. The earrings sold for HK$3.6 million ($463,000).
A Cartier diamond and sapphire “Panthère” bracelet, circa 2006, featuring panthers with sapphire spots, emerald eyes, and onyx noses
Crafted in platinum, the bracelet features two opposing panther heads, pavé-set throughout with brilliant-cut diamonds and what Bonhams noted as a “rare use” of buff-top sapphires instead of onyx for the cats’ spots.
The piece has a total diamond weight of 17.50 carats.
Stewart Young, Bonhams director of jewelry and head of jewelry for Asia, said the results reflected “continued strong demand for rare, colored diamonds and exceptional gemstones, notably bigger stones.”
He added, “The sale also demonstrated the enduring appeal for jewels from notable maisons. We saw a 100 percent success rate for all Cartier jewels presented in the sale, led by the rare Cartier diamond and sapphire ‘Panthère’ bracelet.”
More information about the sale can be found on Bonhams website.
More on Auctions
The Latest
IndependentsSep 29, 2025
Nina Pugliese, Longtime Henne Jewelers Employee, Dies at 65She was remembered as a creative and generous woman of faith, who also had a sweet tooth.
MajorsSep 29, 2025
Overnight Releases New Bridal CatalogThe “Volume 7” bridal catalog features best-selling engagement rings, trending styles, and a new section highlighting anniversary bands.
IndependentsSep 29, 2025
Mark Henry Jewelry to Debut in CanadaThe New York-based brand is set to launch a limited-time offering for the holiday season at Holt Renfrew in Toronto.
TrendsSep 29, 2025
Amanda’s Style File: Ear FocusMove over neck mess, the ear story is the way to make a layering statement today.
Weekly QuizSep 25, 2025
This Week’s QuizTest your jewelry news knowledge by answering these questions.
SurveysSep 26, 2025
Online Shopping, Influencers to Drive Holiday Spending, Mastercard SaysHoliday sales growth is expected to slow as consumers grapple with inflation and tariff-related uncertainty.
Events & AwardsSep 26, 2025
Winners of Austin Jewelry Design Contest Announced Jamie Turner Designs is among the winners of the local “Austin Shines” contest, hosted by Eliza Page, a jewelry store in Austin, Texas.
Brought to you by
reDollar.com Is Rolling Out the Next Level Jewelry, Diamond & Watch Consignment ProgramWith their unmatched services and low fees, reDollar.com is challenging some big names in the online consignment world.
TrendsSep 26, 2025
Piece of the Week: Kwit Jewelry’s Square Signet Pinky RingThe red and azure colorway is one of many fun enamel pairings offered, bringing whimsy to the classic style of a monogramed signet ring.
Policies & IssuesSep 25, 2025
JA CEO Provides Tariff Update Following Annual Fly-InA trade deal with Switzerland seems probable, but reaching an agreement with India remains a challenge, David Bonaparte said.
SourcingSep 25, 2025
2 African Countries Aim to Take Stake in De Beers Botswana’s president said his country wants a controlling share, while Angola envisions multiple countries holding minority stakes.
Lab-GrownSep 25, 2025
Kira Jewels Expands Lab-Grown Diamond ProductionThe manufacturer is adding 1,400 chemical vapor deposition (CVD) reactors to its growing facility in India.
IndependentsSep 25, 2025
Alex Moss’ New Flagship Brings Bold Jewels to SoHoThe jeweler to the stars has worked with Drake, A$AP Rocky, Tyler the Creator, and other celebrities.
WatchesSep 25, 2025
Wilson & Son Jewelers Donates to the Horological Society of New YorkThe Scarsdale, New York-based jeweler donated a professional-grade watch cleaning machine.
Policies & IssuesSep 24, 2025
Tariffs Throw Diamond Trade Into DisarrayThe 50 percent tariffs on diamonds shipped from India to the U.S. have pushed midstream manufacturers to the edge.
SourcingSep 24, 2025
De Beers Adopts New Strategies to Drive Natural Diamond Demand in IndiaDe Beers’ refreshed, multipronged approach, which includes generic promotions and retail partnerships, is delivering positive dividends.
Policies & IssuesSep 24, 2025
For Jewelry Manufacturers, Higher Tariffs Create Long-Term WorriesThey are trying to balance the need to sustain well-established relationships with the pressure higher tariffs have put on margins.
SourcingSep 24, 2025
A Helping Hand: An Effort to Boost Inclusivity in the IndustryJewelry manufacturer Jewelex has partnered with JOSH, an industry training center, on a program for people with disabilities.
CollectionsSep 24, 2025
Greenwich St. Jewelers Goes Back in Time With First Estate CollectionThe collection includes pieces dating back to the Victorian and Art Deco periods as well as mid-century and late 20th-century designs.
Policies & IssuesSep 24, 2025
Diamonds Do Good Names Marcus ter Haar as President-ElectHe previously served as co-chair of the nonprofit’s beneficiary committee.
CollectionsSep 24, 2025
Brilliant Earth’s New Jane Goodall Collection Calls for PeaceIts second collaboration with the conservationist features jewelry with dove and olive branch motifs.
SourcingSep 24, 2025
SRK Launches Kriam PharmaThe diamond manufacturer’s new company will provide accessible and affordable high-quality medicines across India.
ColumnistsSep 23, 2025
Quiet Luxury: What Fall’s Top Trend Means for JewelersEmmanuel Raheb shares tips on how a jeweler’s showcases, marketing, and social media presence can whisper, instead of shout.
MajorsSep 23, 2025
Ames Watson Completes $140M Acquisition of Claire’sThe private equity firm has a plan to revive the mall staple.
SourcingSep 23, 2025
Super Smalls’ New Book Introduces Kids to Gems, Fine JewelryThe “Super Book of Gems” dives into the Mohs Hardness Scale, the Four C’s, and designs from jewelers like Cartier and Bulgari.
MajorsSep 23, 2025
Mattioli Names Kering Exec as New CEOClaudio Pasta will take the lead at the Italian fine jewelry brand, succeeding company founder Licia Mattioli.
CollectionsSep 23, 2025
Monique Lhuillier Adds Fashion Jewelry to Kay Jewelers LineThe new lab-grown diamond jewelry offering is the latest expansion of the designer’s “Bliss” collection.
