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Why has the torquoise in my sliver inlaid ring turned to almost black after having the ring worked on?

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asked Jun 3, 2016 by speleorelic (120 points)

1 Answer

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Turquoise turns dark green and almost black just from normal contact with body oils. If it turned black after coming back maybe you wore it more often and that made it darken quickly.

It is a very porous stone. Wearing it doing dishes would also expose it to oils. Some stones are treated to prevent color loss and stabilize it. Some higher quality stones will resist it. Some of the coloration can be restored by buffing the stone, that is usually done by a professional who knows what to use.

That is why the stone darkens.
answered Jun 6, 2016 by Weasel (58,220 points)