tanzanite gemstone after heat treatment showing vivid blue violet color

Why Tanzanite Is Heated — And Why It’s Perfectly Natural

Summary Almost every tanzanite on the market is heated to reveal its vivid blue-violet color. The process is permanent, stable, and globally accepted. Heating doesn’t reduce authenticity or value—instead, it it enhances the gem’s natural beauty, much like polishing perfects a diamond. Introduction When you first learn that heat treatment in tanzanite is standard, you […]

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