Diamond Grading

Full 4Cs assessment with a plotted clarity diagram. For loose, natural D-to-Z color diamonds only, weighing 0.15 carats or more.

Diamond Studded Jewelry Analysis

Full 4Cs assessment with a plotted clarity diagram, geographic origin and AGL report number laser inscription..

Gemstone Identification

Gemstone identification can involve many tests. These quizzes can help novice gemologists learn to pick the appropriate ones and identify gems.