Show GEMS DYED WITH RADIUM artificial color can be given to precious stones by use usa of the costly metal with chloride and bromide of radium at a killil gram pr r a grain tho the luse of td p give arti facial color id ua precious stones has little industrial comise p to give elyo a moro more accurate idal of tile possible os sible changes in ondon jondon J hits flits been abeen experimenting for ninny many months montha und has produced ocomo upon color about white chlio areg put puro u oxide of aluminum W were ro kept in contact wilh rastum two or three Tv weeks colca about 7 70 0 per por cout catt turned yellow the shades ranging frai lb oroon moil to daric 0 orange 1 a few al ath patently parent ly from another locality bo b camo came rt preen liefh pr amethyst color anda ond a very few changed to lo r rose color A fight oua blu vis to two iwo or tareo to give value approaching pro aching tho of the much prized deep SAVOIl res palo emeralds were dar bened by j radium adlum but wow wort not given the ha deop d oct greenoe areen gre enof of tho the apet expensive wye vi stones brown diamonds bleached white while being byln obtained hlo tile beat beautiful bauo lup pein anto n 0 w hach sir ym crooks traus A fo ory amod 0 d A yellow diamond df amond amethysts na r ra by kadhim into or yellow dirty dirt appearing ring pearls alea ris were cleaned to a clearer white buc bu opals were not affie amenable to tc treat men |