jewelry

Distinguishing African paraíba from Brazilian paraíba tourmalines is difficult. This gallery showcases bright neon specimens from Nigeria.…

These gemology cheat sheets review gem color and clarity grading, specific information on evaluating diamonds and opals, and basic gem identification…

Many consumers don’t have the money they need at hand for their dream engagement ring. Find out which engagement ring financing option is best…

A classic chameleon diamond can change color from green to yellow under certain conditions. Learn more about this process and other color change…

A visual examination is the first step to identifying a gemstone. These quizzes will help student gemologists learn to recognize what they might…

Test your knowledge of refractometer gem analysis with this mini-quiz. You can review material on any question you miss at the end of the quiz.

A tourmaline crystal can show many color combos. This system for grading the C axis of rough can help faceters visualize a gem’s color accurately.…

Learning how to identify gems involves more than just data. This gem identification quiz can help novice gemologists learn how to choose tests…

Learning how to conduct a gemstone examination takes practice. Follow an expert gemologist step-by-step through tests of five unknown samples.…