What Will You Learn
- Building a knowledge base about coloured stones and the coloured stone market
- Using gemmological equipment effectively to identify gemstones
- Explaining the GIA Colored Stone Grading System and evaluating gemstone quality
- Recognising how quality, rarity and colour affect value
- Determining how market factors affect gem value
Possible Career Paths
Coloured Stone Manufacturer
Loose Coloured Stone Buyer and Seller
Jewellery Retailer and Wholesaler
Lab and Research Professional
Colored Stones & Colored Stone GradingLearn the characteristics of colored stones, with a focus on ruby, sapphire, and emerald.
Gem IdentificationIdentify more than 60 species of gemstones, distinguish naturally from laboratory-grown gems, and detect gem treatments.
Equipment & InstrumentationLearn diamond identification and grading skills GIA graders use.
Treatments, Laboratory-Grown & ImitationsIdentify gemstones that have been laboratory-grown, treated or are imitations.
Markets & Supply ChainsUnderstand how market factors and the supply chain affect value.
Established in 1931, GIA protects the public through gemmological research, education, impartial gem identification and grading services, and instrument development. The world’s foremost authority in gemmology and creator of the 4Cs, GIA sets the standard for determining the quality of diamonds and performs research-based identification of coloured gems and pearls. All of GIA's activities are governed by its mission to serve the public. Learn More