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sapphire

Spinel Treatments

Famously found as clean and beautifully shaped natural crystals, spinels seldom receive treatments. Nevertheless, you still might encounter…

Properties of Diamond Simulants

Diamond simulants often appear in jewelry, as side stones and accents as well as centerpieces. Identifying these lookalike materials, whether…

37 Blue Gemstones

Blue gemstones captivate us with their connection to sea and sky, representing one of nature’s rarest colors. Today’s gem market…