user2515103482334 :
I want to mention some facts about turquoise, since I noticed that most of them have turned a greenish color.
Natural, untreated turquoise is a porous stone, so it can absorb skin oils, perfume, lotions, cosmetics, and other chemicals. Over time, this can cause an originally beautiful blue turquoise to darken or turn greenish.
In Iran, where turquoise has a very long history—especially the famous Nishapur turquoise—we traditionally refer to turquoise as a “living stone.” When an originally blue turquoise absorbs oils or chemicals and changes to green, people traditionally say that the stone has “died.” Of course, the stone isn’t literally alive, but interestingly, there is some science behind this old belief.
And yes, this can affect its actual monetary and resale value. If a high-quality natural blue turquoise permanently turns green because it has absorbed oils, perfume, or other substances, it can become less desirable and lose part of its market value. This is especially important with fine Persian/Nishapur turquoise, where a beautiful, consistent blue color can be a major part of what makes the stone valuable.
Naturally green turquoise does exist, though, so a green turquoise isn’t automatically damaged or less valuable. I’m specifically talking about a stone that was originally blue and has changed color over time because of outside substances.
2026-08-13 01:40:16