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jewelry

Gemstone Hardness and Wearability

When choosing gemstones for jewelry, it’s crucial to understand more than just how beautiful a stone looks. Gemstone hardness and wearability…

What is Dispersion?

Have you ever seen the colors of the rainbow coming from deep within a finely cut gem? That effect is known as gemstone dispersion or “fire.”…

What is Birefringence?

Gems that polarize light and split it into two (or three) different directions are said to be doubly refractive. Birefringence is a measure of a…

Disclosing Enhancements

Disclosing enhancements is one of the most important responsibilities gemologists face. In fact, many countries are passing stricter laws…

Zircon Heat Treatment

Zircons are available as jewelry stones in many beautiful, sparkling colors, but are their colors natural? Are the zircons themselves natural,…

Zircon Sources

Zircon sources can be found all over the world. The mineral zircon can occur in many different geological environments. However, only a small percentage…

How Old is My Zircon?

Despite fantastic colors, brilliance, and dispersion, zircon is an often overlooked gemstone. However, zircon is a remarkable mineral with…