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<p>[QUOTE=&quot;Any Jewelry, post: 430306, member: 2844&quot;]Milky is right, but there should be an extra discolouration, which depends on the colour of the amber. Under UV they should have a slight discolouration ranging from pinkish to blueish. I have a very dark amber cabochon which turns a rather sickening colour.</p><p><br /></p><p>A synthetic sapphire should also fluoresce. Maybe they replaced it with a ruby? Not all rubies fluoresce.[/QUOTE]</p><p><br /></p>

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