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<p>[QUOTE=&quot;Ce BCA, post: 3709141, member: 18716&quot;]Fluorescence is when it glows with the presence of the light, phosphorescence is when it glows after the light has been on it (like glow stickers).&nbsp; If the stones are fluorescent they may be plastic, as optical brighteners which are commonly used in plastic fluoresce brightly (which is why plastic pearls often glow bright blue under uv).&nbsp; I can&#039;t tell if the colours in your image are just reflections of the torch light though.&nbsp; It looks like a piece of costume jewellery so the stones are unlikely to be of value.[/QUOTE]</p><p><br /></p>

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