Jade Info

Learn from Jade Experts

Mason-Kay Jade Jewelry has been in business since 1976. Our business continues to thrive because we guarantee that the jadeite jade we sell is natural and untreated (free of dyes, polymers, and other treatments.)

Owner Jeff Mason, GIA G.G., is an expert in testing and valuing jadeite jade and has contributed his expertise to multiple prestigious platforms, including International Colored Gemstone Association's InColor magazine (winter 2020 issue) and Lotus Gemology's Jade - A Gemologist's Guide, solidifying his position as a recognized authority in the field.

  • Click here if you have jade to sell.
  • Click here if you are interested in our Jade Testing or Jade Valuation Services.

Check out the links below to learn about types of jade, colors of jade, and jade treatments.

  • Jadeite vs Nephrite

    There are two gemstones gemologically considered "jade" in the USA: Nephrite Jade and Jadeite Jade, also known as fei cui (翡翠).

    Learn More 

  • Natural Vs Treated Jade

    While gem-quality nephrite jade is rarely treated, the vast majority of jadeite jade on the market is treated with a combination of dye and the impregnation of polymer, wax or resin. Be warned of treated jadeite jades, particularly 'B Jade' and 'B+C Jade' posing as natural 'A' jade.

    Learn More 

  • Jade Value by Color

    Green is the highest valued color of jadeite jade, followed by lavender. However, it's important to understand that price is not solely determine by color alone - but also quality factors including translucency, texture and cut.

    View our Colors of Jade chart 

We Buy Jade

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The Mason-Kay Blog

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  • Does Jade Change Color?

    Does Jade Change Color?

    Understanding the Truth Behind a Common Jade Myth At Mason-Kay Jade, we are proud to offer only natural, untreated jade—a standard we've upheld since 1976. While the majority of our...

    Does Jade Change Color?

    Understanding the Truth Behind a Common Jade Myth At Mason-Kay Jade, we are proud to offer only natural, untreated jade—a standard we've upheld since 1976. While the majority of our...

  • How NOT To Buy Jade | Don't Make These 5 Mistakes!

    How NOT To Buy Jade | Don't Make These 5 Mistakes!

    Are you shopping for jadeite jade jewelry, but not sure where to start? Don't let this scare you, but jade is one of the most mimicked gems on the planet...

    How NOT To Buy Jade | Don't Make These 5 Mistakes!

    Are you shopping for jadeite jade jewelry, but not sure where to start? Don't let this scare you, but jade is one of the most mimicked gems on the planet...

  • Mason-Kay Jade presents the International Jade Summit at the Monterey Bay Jade Festival June 14th, 2025

    Mason-Kay Jade presents the International Jade ...

    Mason-Kay Jade is proud to announce our sponsorship of the inaugural International Jade Summit at the Monterey Bay Jade Festival this June 14th, 2025. This full-day conference will feature educational...

    Mason-Kay Jade presents the International Jade ...

    Mason-Kay Jade is proud to announce our sponsorship of the inaugural International Jade Summit at the Monterey Bay Jade Festival this June 14th, 2025. This full-day conference will feature educational...

  • Jade Saddle Rings Explained

    Jade Saddle Rings Explained

    Jade Saddle Rings At Mason-Kay Jade, we often receive requests for jade saddle rings -- a unisex style characterized by its elongated shape and east-west orientation. The jade saddle may...

    Jade Saddle Rings Explained

    Jade Saddle Rings At Mason-Kay Jade, we often receive requests for jade saddle rings -- a unisex style characterized by its elongated shape and east-west orientation. The jade saddle may...

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