Lab Classes

Participate, practice, and perform. GIA lab classes provide an ideal blend of classroom instruction and hands on learning that are aimed to develop or fine-tune grading skills and techniques. You can take a lab class on its own, or as part of your GIA diploma programme requirements when earning your credential through Distance Education.


As part of it outreach initiative, GIA also offers lab classes for members of the gem and jewellery industry across Middle East & Turkey.


Through a unique combination of hands-on training, one-on-one coaching and multimedia, the Diamond Grading lab class explores how to grade diamonds consistently and accurately using a modern gem microscope and a 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 practising grading techniques on diamonds that were carefully selected and graded by GIA. In the process, you will study how to recognise the most common diamond features. Students must pass a two-stone practical exam to complete the class successfully.

Course Highlights

  • Grade diamonds, according to GIA global grading standards for Clarity, Colour, Cut and Carat Weight
  • Learn to grade diamonds with the aid of 10x loupe as per market practice
  • Learn about diamond treatments for colour and clarity such as HPHT, coating, irradiation, fracture-filling, and laser drilling
  • Learn and identify the common diamond look-a-likes (simulants) such as synthetic moissanite, cubic zirconia, zircon, synthetic rutile, ST, GGG and YAG
  • Learn about synthetic diamonds (man-made / lab-grown diamonds)
Through extensive hands-on practice using gemstones, you will explore grading the colour, clarity and cut quality of a wide range of coloured stones. Coursework includes the study of the GIA Colored Stone Grading System; how to describe colour by hue, tone and saturation; and how to judge gem quality factors. Topics also include the relationship between light and colour and developing colour memory. Study of this content can improve the consistency and accuracy of coloured stone grading skills. Students must pass a two-stone practical exam to complete the class successfully.

Course Highlights

  • Grade coloured stones as per GIA’s grading standards for clarity, colour, cut quality
  • Learn to describe a gemstone's colour in terms of hue, tone, and saturation
  • Learn to judge gem quality factors
  • Learn about the relationship between light and colour
  • Develop your colour memory
In this lab, students practise the same time-tested procedures and identification skills used by the Institute’s renowned gemmological experts. Tools used include a microscope, a refractometer with polarising filter and a removable magnifying eyepiece, refractive index (RI) liquid, a polariscope with an optic figure sphere, a dichroscope, a table model prism spectroscope, a handheld spectroscope and a loupe. Students use these instruments to practise identifying natural gemstones, imitations, assembled stones and synthetics. Along with this hands-on training, your instructors will carefully demonstrate key tests and coach you in quick, effective testing procedures. Be sure to read the Student Notification of Classroom Chemical Usage in the Education Catalogue. Students must pass an instrumentation exam to complete the class successfully.

Course Highlights

  • Understand accurate gem testing procedures and techniques
  • Study the latest gem treatments available in the market today
  • Practise identification of gemstones with the aid of a 10x loupe, Microscope, Refractometer, Polariscope, Dichroscope, and Spectroscope
  • Learn to identify natural gemstones, imitations, and synthetics
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™. Key topics include how to evaluate cultured pearls in order to promote the relationship between beauty, value and quality in merchandise. Students must pass a two-stone assessment to complete the class successfully.

Course Highlights

  • Learn to determine and evaluate the quality of cultured pearls such as Akoya, Freshwater, South Sea, and Tahitian pearls
  • Learn GIA’s 7 Pearl Value Factors™ :
    - Size
    - Shape
    - Colour
    - Lustre
    - Surface quality
    - Nacre quality
    - Matching



For more details and registration contact :
Contact No. : +9714 27 54 500
Email : edume@gia.edu
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