GIA Lab Classes

Colored Stones Grading Lab Session

Through extensive hands-on practice using gemstones, you will explore grading the color, clarity and cut quality of a wide range of colored stones. Coursework includes the study of the GIA Colored Stone Grading System; how to describe color by hue, tone and saturation; and how to judge gem quality factors. Topics also include the relationship between light and color and developing color memory.

Class duration: 3 days


Diamond Grading Lab Session

Through a unique combination of hands-on training, one-on-one coaching, and multimedia, the Diamond Grading lab session explores how to grade diamonds consistently and accurately using a modern gem microscope and a jeweler’s loupe. Students study GIA’s International Diamond Grading System™, explore time-saving shortcuts to determine a variety of grading factors, and are introduced to methods for reading a GIA Diamond Grading Report. You will spend more than 16 hours practicing grading techniques on diamonds that were carefully selected and graded by GIA. In the process, you will study how to recognize the most common diamond features. Students must pass a two-stone practical exam to complete the class successfully. Once you have completed the class, you will keep a lab manual, a pointer probe, a gem cloth, a plotting pen set, a table gauge, a crown angle card, and a color grading card.

Session duration: 5 days (35 clock hours)

What you earn: Letter of Completion

Diamond Grading Lab Session: $2495.00


Pearl Grading Lab Session

Discover how the world’s foremost experts determine the quality of akoya, freshwater, South Sea, and Tahitian pearls. Explore GIA’s 7 Pearl Value Factors TM. Key topics include how to evaluate cultured pearls in order to promote the relationship between beauty, value, and quality in merchandise.

Class duration: 1 day


Gemmy Awards

2018 Gemmy Award Submitters

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Award Categories

The MJA Gemmy Awards design competition is open to all MJA members and non-member jewelers, designers, and goldsmiths who are interested in designing and creating a one-of-a-kind piece of jewelry that demonstrates creativity, artistry, style, and excellence.


  • Jewelry up to $2,000 retail value

  • Jewelry $2,001 to $5,000 retail value

  • Jewelry $5,001 to $10,000 retail value

  • Jewelry $10,001 to $50,000 retail value

  • CAD, all price ranges, all jewelry styles/types*

CAD cannot be used in any of the other categories. The competition differentiates CAD product from cast and fabricated designs. We recognize there is a difference in both the skills needed and the preciseness of the finished product for each construction choice. CAD entries will be judged on the same criteria, plus suitability to the CAD process. * The winning CAD piece would be judged at the national level as an “At-Large Entry”.

New Jewelry Design Award:

This award is for jewelers, goldsmiths, silversmiths, and students who have not entered the competition in the past two years. Entries will follow the competition rules.