GradingJun 02, 2025
GSI Opens New Lab in Thailand GradingJun 03, 2025
Mason-Kay Jade Adds ‘Fei Cui’ to Jade Reports
The company has joined other labs, including GIA and Lotus Gemology, in adopting the Chinese term for "jadeite jade."
All Mason-Kay Jade jadeite authenticity reports will include a statement on “Fei Cui” as of June 1, the company said.
Centennial, Colo.—Mason-Kay Jade will now add “Fei Cui” terminology to its jade testing reports.
The following statement now appears on all its jadeite authenticity reports as of June 1: “Internationally known as ‘Fei Cui,’ an umbrella term for pyroxene jades comprised primarily of jadeite, omphacite, kosmochlor, or any combination thereof.”
The complex intermixing of jadeite, omphacite, and kosmochlor in the polycrystalline aggregate called “jadeite jade” has complicated efforts to draw clear distinctions among pyroxene jades, according to Mason-Kay Jade.
Fei Cui (pronounced “fay choy”) is often referred to as jadeite.
Jadeite jade is a rock composed of the pyroxenes jadeite, omphacite, and kosmochlor, but, as explained in Lotus Gemology’s 2024 book exploring the evolution of jade terminology, these components are very small and it is nearly impossible to determine a stone’s exact composition.
Mason-Kay Jade said it has adopted Fei Cui as a collective term encompassing jadeite jade, jadeite-omphacite jade, omphacite jade, and kosmochlor jade.
“By including this terminology in our Jadeite Authenticity Reports, we stand with the global gemological community in advocating for clarity, consistency, and respect for the mineralogical diversity within the jadeite family,” said Mason-Kay said.
With this decision, it aims to support accurate communication and prevent the devaluation or misrepresentation of omphacite jade, the company said.
Other industry institutions have also chosen to adopt the Chinese term.
GIA addressed the issue in the 2012 report, “The Jadeite-Omphacite Nomenclature Question,” and in 2023, updated its jade report to include the term, accompanied by an explanation, when appropriate.
Similar moves have been made by Hong Kong Jade and Stone Laboratories as well as the Fei Cui Working Group—operating under the CIBJO umbrella—which works to create a comprehensive international standard for Fei Cui.
Related stories will be right here …
The following statement now appears on all its jadeite authenticity reports as of June 1: “Internationally known as ‘Fei Cui,’ an umbrella term for pyroxene jades comprised primarily of jadeite, omphacite, kosmochlor, or any combination thereof.”
A jadeite authenticity report by Mason-Kay Jade showing the new statement on “Fei Cui”
The complex intermixing of jadeite, omphacite, and kosmochlor in the polycrystalline aggregate called “jadeite jade” has complicated efforts to draw clear distinctions among pyroxene jades, according to Mason-Kay Jade.
Fei Cui (pronounced “fay choy”) is often referred to as jadeite.
Jadeite jade is a rock composed of the pyroxenes jadeite, omphacite, and kosmochlor, but, as explained in Lotus Gemology’s 2024 book exploring the evolution of jade terminology, these components are very small and it is nearly impossible to determine a stone’s exact composition.
Mason-Kay Jade said it has adopted Fei Cui as a collective term encompassing jadeite jade, jadeite-omphacite jade, omphacite jade, and kosmochlor jade.
“By including this terminology in our Jadeite Authenticity Reports, we stand with the global gemological community in advocating for clarity, consistency, and respect for the mineralogical diversity within the jadeite family,” said Mason-Kay said.
With this decision, it aims to support accurate communication and prevent the devaluation or misrepresentation of omphacite jade, the company said.
Other industry institutions have also chosen to adopt the Chinese term.
GIA addressed the issue in the 2012 report, “The Jadeite-Omphacite Nomenclature Question,” and in 2023, updated its jade report to include the term, accompanied by an explanation, when appropriate.
Similar moves have been made by Hong Kong Jade and Stone Laboratories as well as the Fei Cui Working Group—operating under the CIBJO umbrella—which works to create a comprehensive international standard for Fei Cui.
More on Grading
The Latest
CollectionsSep 11, 2026
A Sapphire ‘Stardust’ Ring From Greenwich St. Jewelers The Latine-owned New York jeweler is marking two milestones this year: its 50th anniversary and the 25th anniversary of the 9/11 attacks.
ColumnistsSep 11, 2026
Sherry Smith: Stop Waiting for December to Save Your ChristmasThe stores that have a great December are the ones that made good decisions in August, September, and October, Sherry Smith writes.
MajorsSep 11, 2026
The Wishing Place by JTV OpensThe jewelry retail broadcast network has sponsored a new space for Make-A-Wish East Tennessee on its campus in Knoxville.
Brought to you by
Your Piece Could Be the One Editors Talk AboutSubmit your pieces for a chance to win in this year's competition.
Events & AwardsSep 11, 2026
The Edge Awards Scholarships to 2 Young Jewelry ProfessionalsThe recipients were recognized at the 24 Karat Club of the Southeastern United States’ annual banquet.
Weekly QuizSep 10, 2026
This Week’s QuizTest your jewelry news knowledge by answering these questions.
MajorsSep 10, 2026
Lagos Founder Steven Lagos Steps Down as CEO Keith Rolfe, CFO and COO of Lagos, is now at the jewelry brand’s helm while Steven takes on the role of executive chairman.
CrimeSep 10, 2026
FBI Offers $50K Reward for ‘Most Wanted’ Fugitive in $1M Jewelry HeistAlberto Perez-Elias is one of four men charged in the armed robbery of a Cape Coral, Florida, jewelry store and remains at large.
Brought to you by
Why More Jewelry Retailers Are Hosting Turnkey Estate Buying EventsRetailers are seeking new ways to attract customers, increase traffic, and create revenue – Estate buying events are a popular solution.
AuctionsSep 10, 2026
Massive Matched Pair of Paraíba Tourmalines Head to Sotheby’sThe “Kat Florence Luminas” will be offered together as one lot and could fetch up to $637,000.
SourcingSep 10, 2026
AGTA Announces 4 Newly Elected DirectorsFour directors were elected to the AGTA board and will serve three-year terms beginning in February.
AuctionsSep 10, 2026
Former Sotheby’s, Christie’s Exec Appointed CEO of Julien’s Auctions Ken Citron joins the celebrity memorabilia-focused auction house ahead of its first week-long series of events in Abu Dhabi.
FinancialsSep 09, 2026
Signet Jewelers to ‘Double Down’ on Blue Nile Amid Strong SalesThe jewelry retailer said it sees opportunity at higher price points, particularly in natural diamonds for bridal and fashion.
IndependentsSep 09, 2026
Sarah Leonard Fine Jewelers Closes After Nearly 80 YearsThe Los Angeles-based, family-owned jeweler was founded by Lenny and Sunny Friedman in 1946.
SourcingSep 09, 2026
Fura Gems Notes ‘Remarkable’ Interest in Larger Rubies at Latest SaleThe auction, held in Bangkok, was 96 percent sold by lot, with nearly 411,000 carats of Mozambiquan rubies sold.
MajorsSep 09, 2026
Stuller’s Latest Catalog Includes Its New Demi-Fine CollectionFine Jewelry 2027-2028 has more than 900 new styles, including silver, gold-filled, gold-plated sterling silver, and vermeil jewelry.
Policies & IssuesSep 09, 2026
8 Key Changes the FTC Made to the Jewelry Guides: A Refresher Learn more about the new terms for lab-grown diamonds and composite gemstones, and the major changes in store for precious metals jewelry.
IndependentsSep 08, 2026
Ricky Bromberg, Longtime President of Bromberg & Co., Dies at 67 Bromberg is remembered as a Southern gentleman who always wore a suit and tie and treated others with kindness.
TrendsSep 08, 2026
Amanda’s Style File: A Hot Take on September’s Birthstone With high durability and a wide range of colors to choose from, sapphires may be the ultimate birthstone, Gizzi claims.
ColumnistsSep 08, 2026
Peter Smith: Humor Is No Laughing MatterLaughter is often considered a distraction in the workplace, but it has benefits for both staff and management, Peter Smith writes.
MajorsSep 08, 2026
Former Tiffany & Co. Exec Joins Exemplar Luxury GroupGretchen Koback Pursel is the new chief people officer at the company formerly known as Saks Global.
IndependentsSep 04, 2026
Orloff Jewelers Will Soon Unveil a Bigger, Better LocationThe California jeweler is renovating its store in Fresno, with plans to show off the new space in December.
CollectionsSep 04, 2026
Chelsea Gabrielle Transforms Pilates Reformer Springs Into Ring A lifelong practitioner of Pilates, Gabrielle looked to the springs’ tension and suspension when creating this ring, our Piece of the Week.
Events & AwardsSep 04, 2026
JCK Industry Fund Accepting 2027 ApplicationsThe deadline to apply is Nov. 13.
AuctionsSep 04, 2026
Christie's Names New Global Head of WatchesThe auction house has promoted Remi Guillemin, formerly its head of watches for the Americas and EMEA, to the role.
EditorsSep 03, 2026
Q&A: Simon G.’s CEO on Why He Won’t Use AI for Jewelry DesignZaven Ghanimian discussed the value of human craftsmanship and where the implementation of artificial intelligence does work.
Events & AwardsSep 03, 2026
Here Are the First Recipients of Nina Pugliese Memorial Scholarship Jewelers of America also revealed the recipients of the Seymour & Evelyn Holtzman Bench Scholarship and its own scholarship programs.
WatchesSep 03, 2026
Robert Pattinson Joins Jaeger-LeCoultre as Brand AmbassadorThe British actor, known for his roles in “Twilight” and “The Odyssey,” will star in a campaign for the Master Control Chronometre.
