Business Details
50 Years
experience
Your Trusted Source for Natural Jade Jewelry & Expert Testing Services
Since 1976, Mason-Kay has established itself as a premier family-owned authority in natural jade jewelry and testing services. With over 45 years of industry leadership, we maintain the largest inventory of untreated jadeite jade in the U.S., serving both trade professionals and individual clients. Our expertise includes advanced infrared spectroscopy for polymer detection, setting industry standards for authenticity verification.As AGTA members with a board-level presence, we combine fourth-generation jewelry heritage with cutting-edge technology to deliver precise value assessments and certification. Our commitment to transparency is demonstrated through warranty certificates guaranteeing natural jade and rigorous documentation protocols for client protection.
Services
Jade Testing
Value Assessment
Jade Jewelry Sales
Jade Certification
Appraisal Services
Jade Valuation
Jade Authentication
Jade Collection
Jade Education
Trade Services
Details
- Year established: 1976
Highlights and features
- We offer 45+ years of specialized jade expertise with AGTA board-level involvement
- Our lab uses infrared spectroscopy, the only reliable method for polymer detection
- We maintain the largest inventory of untreated jadeite jade in the United States
- Our value assessments follow strict industry standards with detailed documentation
- Family-owned since 1976 with fourth-generation jewelry expertise and innovation
Services
Jadeite Testing
Our laboratory employs infrared spectroscopy to detect polymer impregnation in jadeite, the only reliable method for identifying 'B' jade. We perform comprehensive gemological analysis including refractive index, specific gravity, and optical spectroscopy. Our testing process follows strict protocols to ensure accurate results for both trade professionals and individual clients.
Value Assessment
We provide detailed valuation reports for natural jadeite jade pieces, determining either Retail Replacement Value or Fair Market Value. Our assessments consider current market conditions, material quality, and craftsmanship. Each evaluation includes comprehensive documentation with photographic evidence and detailed specifications for insurance or resale purposes.
Jade Jewelry Sales
Our inventory features the largest selection of natural jadeite jewelry in the U.S., including exclusive designer pieces and estate collections. We offer a wide range of colors and cuts, all guaranteed untreated. Our collection includes both contemporary designs and antique pieces with historical significance for discerning collectors.
Jade Certification
We issue warranty certificates verifying the natural origin of jade pieces, backed by our laboratory testing results. Our certification process includes detailed documentation with photographic records and material analysis. This provides buyers with permanent assurance of authenticity and value preservation.
Trade Services
We support retail accounts with comprehensive jade resources including inventory management, online showroom access, and trade show representation. Our services include bulk purchasing options, display solutions, and educational materials to enhance retail sales capabilities for jade products.
People
Jeff Mason
President
Fourth-generation jeweler with 40+ years in the jade business, GIA Graduate Gemologist since 1984, and AGTA Board member since 2015.
Kristina Mason
Designer
Jade designer since 2007, creating exclusive one-of-a-kind pieces, with over 30 years combined experience in the family business.
Questions
What types of jade do you work with?
We specialize exclusively in natural jadeite jade, the most valuable type of jade, and do not handle nephrite or treated materials.
How do you test jade authenticity?
We use infrared spectroscopy to detect polymer impregnation ('B' jade) and standard gemological tests for comprehensive authenticity verification.
Do you buy jade from individuals?
Yes, we purchase finished natural jade jewelry and polished loose stones, but do not accept rough material, statuary, or figurines.
What valuation services do you offer?
We provide Retail Replacement Value and Fair Market Value assessments for natural jadeite jade pieces with detailed documentation.
Are your jade pieces guaranteed natural?
All our jade comes with warranty certificates guaranteeing natural, untreated material with no polymer impregnation or dye treatments.
Videos
