▁April ▁ 1 9 3 2 , ▁Bel per ron ▁accepted ▁the ▁offer ▁of ▁Bernard ▁Herz , ▁to ▁take ▁up ▁a ▁central ▁position ▁in ▁his ▁company . ▁Bernard ▁Herz , ▁a ▁ren owned ▁Paris ian ▁deal er ▁in ▁p ear ls ▁and ▁pre cious ▁stones , ▁was ▁one ▁of ▁the ▁René ▁Bo iv in ' s ▁favour ite ▁supp liers . ▁Bernard ▁Herz ▁gave ▁her ▁the ▁freedom ▁to ▁design ▁her ▁own ▁models ▁under ▁the ▁name ▁of ▁Herz . ▁Based ▁in ▁her ▁private ▁sal on ▁at ▁ 5 9 ▁rue ▁de ▁Ch âte aud un ▁in ▁Paris , ▁Bel per ron ▁secured ▁the ▁services ▁of ▁the ▁stone c utter ▁Ad rien ▁Lou art ▁( 1 8 9 0 – 1 9 8 9 ) ▁and ▁appointed ▁Gro ë né ▁et ▁Dar de ▁as ▁her ▁exclusive ▁manufact urer . ▁ ▁During ▁the ▁ 1 9 3 0 s , ▁the ▁original ity ▁of ▁Bel per ron ' s ▁works ▁brought ▁increasing ▁international ▁acc laim ▁to ▁the ▁M aison ▁Bernard ▁Herz . ▁Bel per ron ' s ▁fame ▁grew , ▁and ▁she ▁became ▁a ▁major ▁figure ▁in ▁the ▁art istic ▁world ▁both ▁in ▁France ▁and ▁abroad . ▁Al most ▁every ▁month , ▁her ▁cre ations ▁appeared ▁alongside ▁those ▁of ▁j ew ellers ▁such ▁as ▁Cart ier , ▁B ouch er on ▁or ▁Van ▁Cle ef ▁& ▁Ar p els ▁in ▁lux ury ▁fashion ▁mag az ines ▁such ▁as ▁Vog ue ▁and ▁Har per ' s ▁B az aar , ▁with ▁the ▁regular ▁collaboration ▁of ▁well -