Gemstone Doublets, Triplets, and Other Assembled Stones
An assembled gemstone is constructed from two or more combined materials. Gemstone doublets and triplets, intarsias, and rhinestones are all…
What’s the Difference Between Synthetic, Simulated, and Created Gemstones?
Some people make distinctions between different kinds of synthetic or lab-grown gems. In fact, you may even find different definitions of synthetic…
An Interview with Spinel Collector Seth Rosen
Spinel is a rare gem not well-known among consumers. Even some professionals in the gem and jewelry trade aren’t well-informed about this…
How Does Spinel Form?
Spinels may be well-known for their red hue. However, spinel gemstones come in many more colors. They also occur in orange, purple, violet, blue,…
How Do Spinels Form?
Available in many colors, spinels are becoming more popular with consumers. Learn how spinels form and how these gemstones get their colors.
An Interview with Spinel Collector Seth Rosen
Spinel collector and gem trade expert Seth Rosen discusses the current market and potential future for this beautiful but little-known stone.…
Spinel Treatments and Enhancements
Spinels are rarely treated, but gemologists should know how to detect spinel treatments. Learn about filling, heating, and diffusion.
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