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
CollectionsMay 29, 2026
Cultus Artem’s Necklace Is the Oasis in Las Vegas’ DesertThe “River of Heaven” necklace, our Piece of the Week debuting at Couture, combines 26 salt and pepper diamonds spaced by Tahitian pearls.
IndependentsMay 29, 2026
Meet the 2026 Retailer Hall of Fame InducteesThis year’s inductees include second-, third-, and fourth-generation jewelers.
Events & AwardsMay 28, 2026
JCK Announces Jesse Itzler as 2026 Keynote SpeakerThe author, speaker, and entrepreneur will give his presentation, “Spiritual Billionaire,” on Saturday morning.
Brought to you by
All Eyes on Gold Prices. Alternatives to Look For. And What to BEWARE of in VegasAs gold prices rise, today’s retailers are looking for alternatives at prices that will appeal to wider audiences.
Events & AwardsMay 28, 2026
JCK Rocks To Ride With NellyThree-time Grammy award-winning artist Nelly is set to perform at the annual event at Tao Beach on Sunday night.
Weekly QuizMay 28, 2026
This Week’s QuizTest your jewelry news knowledge by answering these questions.
MajorsMay 28, 2026
Signet Jewelers to Buy The Clear Cut Signet will integrate the online-only, natural diamond-focused jeweler into Blue Nile, which it wants to position as a higher-end retailer.
CollectionsMay 28, 2026
Meet The 17 Newcomers to Couture’s Design AtelierThese up-and-coming jewelry brands are bringing their distinct aesthetic and unique point-of-view to the Design Atelier for the first time.
Brought to you by
How Modern Training Is Becoming a Competitive Advantage for Jewelry RetailersWith the trade and customer trust in mind, GIA® developed NextGem™ – on-demand training designed specifically for retail.
Events & AwardsMay 27, 2026
5 Security Tips for Las Vegas Jewelry Market Week 2026This year, it’s what could happen outside of show hours that worries JSA Executive Vice President Scott Guginsky.
ColumnistsMay 27, 2026
What Jewelers Can Learn From Luxury Fashion’s Digital PlaybookHigh-end fashion houses know how to emotionally connect with customers online. Retail jewelers should take note, Emmanuel Raheb writes.
Events & AwardsMay 27, 2026
Couture’s ‘The Iridescence’ Will Showcase 7 Emerging Jewelry DesignersThe designers are the third cohort of mentees from the show’s Belonging @ Couture mentorship program.
ColumnistsMay 26, 2026
The Key Mindset for Better Trade Show BuyingBuying discipline at trade shows starts with clarity about your inventory levels, Smith writes.
Events & AwardsMay 26, 2026
12 JCK Talks Sessions to Add to Your Las Vegas ScheduleThe trade show’s education series returns, with sessions on retail trends, AI, watches, marketing, corporate responsibility, and more.
Events & AwardsMay 26, 2026
CBG Brings Its Curated Designer Project to Las Vegas ShowThe Curated Designer Project has expanded to highlight eight independent jewelry designers during CBG’s Las Vegas show.
TrendsMay 26, 2026
Amanda’s Style File: A Cooldown Is ComingBring a cool tone to your summer jewelry with these white metal pieces.
Events & AwardsMay 22, 2026
Instore Buys JA New York ShowThe deal closed this week, which means Instore will produce the JA NY show slated to take place this fall.
FinancialsMay 22, 2026
Richemont’s Jewelry Brands Lead the Charge in Q4The company’s jewelry sales were up in Q4 and the fiscal year, with Richemont raising prices in part because of the cost of gold.
CollectionsMay 22, 2026
Leigh Maxwell Celebrates 5 Years at Couture With ‘Bauble’ CollectionThe “Bauble” capsule collection of colorful one-of-a-kinds includes our Piece of the Week, the “Bauble” earrings, featuring rose zircon.
MajorsMay 22, 2026
Stuller’s New Packaging, Display Catalog Is Out The updated catalog has a newly dedicated section for gift wrapping.
PodcastsMay 21, 2026
Episode 5: Sotheby’s Frank Everett Puts the Auction Market in PerspectiveEverett covers colored stones’ surging popularity, the mellow return of the “Mellon Blue,” and his “The Devil Wears Prada” doppelgänger.
IndependentsMay 21, 2026
Springer’s Jewelers’ New Flagship Will Serve Next-Gen Luxury ShoppersFourth-generation CEO Lilly Mullen wants to emphasize experience, connection, and personalized service.
Events & AwardsMay 21, 2026
JA Announces Nina Pugliese Memorial ScholarshipThe new award, created in partnership with Henne Jewelers, honors the late designer’s legacy through supporting jewelry education.
SourcingMay 21, 2026
Botswana, Angola Join WFDBThe addition of the diamond-producing countries as nation affiliated members broadens the federation’s global representation, WFDB said.
CrimeMay 20, 2026
NYPD Warns of Jewelry Swap Scams Targeting SeniorsThe NYPD is warning elderly New Yorkers to keep their jewelry hidden when walking outside to avoid being a target.
IndependentsMay 20, 2026
Adornment & Theory’s New Store Feels Like Home Designer Viviana Langhoff has realized her dream of owning a space for her Chicago jewelry store that looks and feels like her brand.
Events & AwardsMay 20, 2026
Here Is Couture’s 2026 Education Lineup The sessions will run from Friday, May 29, to Sunday, May 31, with one being a live taping of an episode of Couture’s podcast.
Lab-GrownMay 20, 2026
Savannah Friedkin Jewelry Names New CEOFormer Stephanie Gottlieb Fine Jewelry executive Morgan P. Richardson is joining the lab-grown diamond jewelry brand.
