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Eighth Anniversary Gift: Tourmaline

Just like birthstones, there are gemstones that represent each wedding anniversary year. Tourmaline is the gemstone to give for an eighth anniversary…

Hybrid Gemstones

Some treatments add lab-created material to mined gemstones. The part-natural, part-synthetic nature of these gems has prompted some in the…

Assembled Gemstones

An assembled gemstone is constructed from two or more combined materials. Gemstone doublets and triplets, intarsias, and rhinestones are all…

Dye Testing

Gems are frequently dyed to enhance their color. Distinguishing natural from enhanced stones is an essential skill for gemologists. The materials…

Hot Point Testing

Hot point testing can determine if some gem materials are plastic imitations. It can also reveal if a stone is treated with wax or plastic. By Donald…

How to Use the 10X Loupe

The simple 10X loupe fits in your pocket and costs less than any other piece of gemological equipment. You’ll learn more with it than any other…