Question: What is the difference between heated and unheated sapphire?

What does unheated gemstone mean?

In recent decades, following the invasion of “heated stones” on the market (some 95% of corundum), some purists have been looking for stones that have not been thermally modified by human hands. This is what is more commonly known as “unheated” stones.

What is the rarest color of sapphire?

The rarest sapphire is the Padparadscha, an extremely rare pink and orange stone that is stunning to behold. However, the most valuable sapphires are the Kashmir variants, which are blue.

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