Trade Services

Gemworld International provides services to the trade,
committed to excellence and independence.

Gem Market News (Included with GemGuide Pricing)

The Gem Market News is highly acclaimed in the industry for its accurate information and timely articles. Many of the articles are available in our searchable archives, for current members only.
Learn about the Gem Market News

World Of Color

The World of Color is simple to use with repeatable results. A few easy steps is all you need to describe the color and grade your gem.
Find our more information on the World of Color



We offer classes on corundum treatments and pricing on location worldwide. We also offer individual corporate classes on subjects geared toward your needs. You can also inquire about individual tutoring and hands-on workshops at our offices or yours.
See all our the Classes we offer


Our experts can assist in varied expert roles. We have acted as expert witnesses in important court cases and have lectured worldwide. Our research projects have helped major mining companies in areas of pricing and gemstone trend analysis. We also provide quality control analysis for gem companies and mass marketers with our verification cards and reports.

We provide a number of industry related products you can order from our website for your convenience. From appraisal covers and sleeves to a select group of industry books and products, shop here and save time with these recommended items.
Talk to one of Appraisers

Find an Appraiser Packages

Our “Find an Appraiser” feature allows consumers to find a qualified appraiser in their geographic area. You can list your company on this site with a basic or premium listing. Depending on your level of membership with Gemworld and the level you choose, your listing will be free or carry a minimal cost.
Put your Business on the Map