1. Grasscity.com August contest: Follow us on YouTube to be entered to win a PAX 2 Vaporizer! Winner will be announced Sept 1st
    Dismiss Notice

cobalt glass block uv rays?

Discussion in 'General' started by specialk916, Sep 8, 2010.

  1. 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

Share This Page