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cobalt glass block uv rays?

  • by specialk916
  • Sep 08 2010 02:55 AM
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  • specialk916
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Posted 08 September 2010 - 02:55 AM

so ive found multiple sources that say amber glass blocks uv rays, and i knw uv rays break down thc... but amber glass is ugly, does anybody know if cobalt glass does the same? i was pretty sure i heard that somewhere b4
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