▁gla ze , ▁which ▁had ▁acquired ▁a ▁great ▁reputation , ▁but ▁found ▁rep lic ating ▁it ▁very ▁difficult , ▁whether ▁in ▁por cel ain ▁or ▁stone ware . ▁In ▁France ▁S è v res ▁por cel ain ▁began ▁experiment ing ▁in ▁ 1 8 8 2 . ▁Ernest ▁Chap let ▁succeeded ▁in ▁making ▁it ▁in ▁ 1 8 8 5 , ▁with ▁financial ▁backing ▁from ▁Hav il and ▁& ▁Co ., ▁and ▁Pierre - Ad rien ▁Dal pay rat ▁also ▁succeeded ▁in ▁making ▁a ▁version . ▁Chap let ▁won ▁a ▁gold ▁medal ▁at ▁the ▁ 1 8 8 9 ▁Ex position ▁Univers elle ▁in ▁Paris ▁for ▁his ▁gla ze . ▁ ▁The ▁American ▁Hugh ▁C . ▁Robert son , ▁of ▁the ▁Ch else a ▁Ker am ic ▁Art ▁Works ▁in ▁Ch else a , ▁Massachusetts , ▁became ▁interested ▁in ▁Oriental ▁gla zes ▁on ▁seeing ▁them ▁at ▁the ▁Philadelphia ▁Ex position ▁of ▁ 1 8 7 6 ▁and ▁a ▁" pre occupation ▁with ▁gla zes ▁was ▁to ▁obs ess ▁Robert son ▁for ▁the ▁rest ▁of ▁his ▁career ". ▁He ▁finally ▁developed ▁a ▁version ▁of ▁sang ▁de ▁bo e uf ▁in ▁ 1 8 8 8 , ▁which ▁he ▁nick named ▁Sang ▁de ▁Ch else a , ▁but ▁the ▁following ▁year , ▁" near ly ▁p enn il ess ▁from ▁his ▁cost ly ▁experiments ▁with ▁the ▁sang - de - bo e uf ▁gla ze ", ▁he ▁closed ▁the ▁pot tery . ▁ ▁In ▁England ▁the ▁Rus kin ▁Pot tery ▁in ▁Sm eth wick ▁achieved