Joined: Sun Oct 07, 2007 2:04 pm Posts: 623 Location: Southern OK/North TX
unheated yellow sapphire can fade. Tony.
Some Topaz will lose it's color, just like the sherry-colored material from Utah.
Thanks Tony/Ryan - is it direct or indirect sunlight that causes these to fade? ...guess anything affected by 'indirect' would have the same results with 'direct' wouldn't it...
I'm trying to figure out the types of stones to avoid when I know one of my pieces will possibly be near a window or direct sunlight...there are some I'll probably avoid completely just because they're so affected by everyday light exposure. My backs are always completely dry and sealed with UV protection sealers so those are no problem.
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