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
SurveysJul 16, 2025
Signet Jewelers Falls Lower on NRF’s ‘Top 100’ Retailers ListThe middle class is changing its approach to buying jewelry and affordable luxury goods, the NRF said.
FinancialsJul 16, 2025
Richemont’s Jewelry Sales Up 7% in Q1It marks the third consecutive quarter of growth for Cartier, Van Cleef & Arpels, Buccellati, and Vhernier.
WatchesJul 16, 2025
The Top-Selling Rolex Models of the Last 15 Years, According to Bob’s Watches The reseller’s market trends report, based on its sales data, also shows exactly how much Rolex prices have jumped since 2010.
Brought to you by
Investing in the Next Generation of Bench JewelersThe Seymour & Evelyn Holtzman Bench Scholarship from Jewelers of America returns for a second year.
AuctionsJul 16, 2025
Christie’s To Honor Dinh Van With ExhibitionThe auction house will be hosting a retrospective paying tribute to jeweler Jean Dinh Van and his company’s 60th anniversary.
Weekly QuizJul 10, 2025
This Week’s QuizTest your jewelry news knowledge by answering these questions.
IndependentsJul 16, 2025
Clyde Duneier Ushers In Fourth GenerationJake Duneier and Danielle Duneier-Goldberg have stepped into the roles of CEO and president, respectively.
CollectionsJul 15, 2025
Boucheron’s New High Jewelry Calls Attention to Nature’s ImpermanenceThe “Impermanence” collection contemplates nature through the Japanese art of Ikebana (flower arranging) and philosophy of wabi-sabi.
Brought to you by
Jewelers of America is Headed to Las Vegas for JCK 2025The countdown is on for the JCK Las Vegas Show and JA is pulling out all the stops.
MajorsJul 15, 2025
James Avery Expands to 2 More StatesThe Texas-based jewelry retailer has set up shop in Tennessee and Arizona.
Events & AwardsJul 15, 2025
Neiman Marcus Vet Joins Couture as Brand Director Eric Ford will step into the role, bringing with him decades of experience.
IndependentsJul 15, 2025
Ben Bridge Jeweler Acquires Olympic ManufacturingIn addition to improved capabilities, the acquisition will allow the jeweler to offer support to other independent jewelers.
CollectionsJul 15, 2025
Guzema Debuts First Colored Gemstone JewelryThe “Celestial Blue” capsule collection campaign features Olympian Kateryna Sadurska.
MajorsJul 14, 2025
Nanis Opens First StoreThe seasonal store, located in Mykonos, Greece, offers exclusive events, personal styling, and curated experiences.
IndependentsJul 14, 2025
It’s the Summer of Love at Long’s JewelersThe New England jeweler is hosting a bridal event for the month of August.
SourcingJul 14, 2025
Ethical Gem Fair Heads to SeattleThe trade-only event will host its debut fair in the Emerald City later this month.
Events & AwardsJul 11, 2025
The Edge’s Annual Conference Returns in SeptemberIts sessions will focus on inventory strategies, staff performance, retention and acquisition, emerging market trends, and more.
CollectionsJul 11, 2025
Piece of the Week: Miseno’s ‘Arco’ EarringsFor its 10th anniversary, Miseno designed the “Arco” earrings based on the Arco Felice, an arch conceptualized in A.D. 95 in Miseno, Italy.
Policies & IssuesJul 11, 2025
James Avery to Donate $1M to Texas Hill Country Relief EffortsThe jewelry company is one of several contributing to relief efforts in the region after the recent floods.
TrendsJul 11, 2025
Kelly Osbourne’s Engagement Ring Is Sweet as HoneyInspired by fiancé Sid Wilson’s nickname for her, the white and yellow diamond ring features a unique honeycomb design.
CollectionsJul 10, 2025
Penny Preville Celebrates 5 Decades of Jewelry DesignThe brand is marking its 50th anniversary with a limited-edition bangle, high jewelry suites, new collections, and more.
IndependentsJul 10, 2025
Steven Goldfarb to Retire, Close Alvin Goldfarb JewelerGoldfarb said changes in the industry, coupled with his age and the updates needed to modernize his business, drove his decision.
MajorsJul 10, 2025
LVMH Names New Chairman, CEO of the AmericasLongtime LVMH executive Michael Burke has stepped into the role.
Events & AwardsJul 10, 2025
IAC Gold and Diamond Conference Returns to NYC Central topics of next week’s event include climate action, labor rights, artisan preservation, and value retention in producing countries.
MajorsJul 10, 2025
Hearts On Fire Appoints New Sales DirectorVickie Rokkos has joined the jewelry company as its new national sales director of North America.
SurveysJul 09, 2025
Jewelry Stays Strong as Luxury Market Slows, Bain & Co. Says Turbulence will be the new baseline for luxury as it faces its biggest potential setbacks in 15 years, a recent report said.
Supplier BulletinJul 09, 2025
JCK Unwrapped: Trends, Insights & Post-Show TipsSponsored by Rio Grande Jewelry Supply
CollectionsJul 09, 2025
Cece Jewellery’s New Fruit Jewels Celebrate Life’s SweetnessThe “For the Love of Fruits” collection features five fruit pendants, each holding a different meaning.
