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How Old Is My Zircon?

Is zircon the oldest mineral? Find out why zircon is important for scientifically dating rocks and how to learn how old a zircon gemstone is.

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

Step 3: Practical Gemology Lesson 23 Back to syllabus Gems are frequently dyed to enhance their color. Distinguishing natural from enhanced…