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 Post subject: Ruby filter with Blue light
PostPosted: Mon Mar 24, 2014 1:34 pm 
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Joined: Tue Apr 17, 2012 1:39 pm
Posts: 20
Good Day All Brothers and Sisters
I bought ruby filter from Hong Kong on ebay , seller sent me ruby filter with blue light torch , i was thinking it is UV light led torch but he said me this is blue light not uv light , you need to see ruby stones trough ruby filter with this blue light source.
kindly tell me what is this ? this is true ?
what is difference b/w uv light and blue light ? are these same lights or not ?
i will be very thankful to you
Irfan


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 Post subject: Re: Ruby filter with Blue light
PostPosted: Mon Mar 24, 2014 2:33 pm 
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Joined: Sun Oct 16, 2005 12:22 pm
Posts: 21602
Location: San Francisco
Again, may I suggest reading over our article on Color Filters in the Gemology Project:
http://gemologyproject.com/wiki/index.p ... or_Filters


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