garnet

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

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

A dichroscope can distinguish the colors of pleochroic gems. Learn how gem cutters can use this tool to choose the best faceting designs for these…

Gemstone identification requires a good reference library and some basic gemology tools. Before you go shopping, learn more about what you’ll…

Ultraviolet testing can be crucial for gemstone identification. Learn the basics of this technique as well as how to make your own UV viewing box.…

The spectroscope is a fundamental gemological tool. Learn how to use it to identify gemstones based on their absorption of different wavelengths…

Do white sapphires make good alternatives to diamonds? Compare their qualities and learn how to choose the right engagement ring stone for you.…

We often recommend that novice gemologists send gems that are difficult to identify to a laboratory for testing. Gemological and mineralogical…

Although gemstone magnetism isn’t a commonly tested gemstone property, it may be useful for making quick separations outside the lab. By Richard…