I AM EXTREMELY SENSITIVE TO IMPURITIES OF ANY KIND, BUT I AM NOW GRATEFUL TO LEARN THAT THE GREAT THOU ART, CREATOR INVENTED  MOTHER  NATUREEARTH  UNIVERSE TO ALL WORK IN HARMONY AND ALL THESE WONDERS JUST FOR US TO BENEFIT FROM!! WHAT A VERY PROFOUND LIFE!!  WAYFAIR, YOU KEEP BEING SO GREEN  ECO FRIENDLY WITH ALL THESE DIVINE PRODUCTS JUST FOR US!!! L O V E MY SALT LAMP  UNTIL I PURCHASE OTHERS.....I WILL INTEND TO KEEP CARRYING THIS ONE(HEAVY, WEIGHTY, ALL NATURALBEAUTIFUL ROCK) FROM ROOM TO ROOM or ANYWHERE I GO!!  I TELL YOU I AM ALL SET WITH MY AIR PURIFIER FILTERS FROM 3M, MY SALT ROCK LAMP  MY SANDALWOOD INSCENCE......NIRVANA WAYFAIR!! NAMASTE!!!!!!!(WHICH MEANS IN ANCIENT SANSKRIT THE DIVINE LIGHT IN ME HONORS THE DIVINE LIGHT IN YOU...... DAWN WHITE LIGHT OR kd5qnb.