ined ▁and ▁polit ically ▁progress ive . ▁That ▁pin ▁( or ▁one ▁of ▁a ▁few ▁others ▁like ▁it ) ▁was ▁our ▁bad ge ▁and ▁we ▁wore ▁it ▁proud ly . ▁It ▁celebrated ▁the ▁hand ▁of ▁the ▁artist ▁rather ▁than ▁the ▁market ▁value ▁of ▁the ▁material ." ▁ ▁In ▁ 1 9 4 6 ▁the ▁Museum ▁of ▁Modern ▁Art ▁in ▁New ▁York ▁organized ▁the ▁exhibition ▁Modern ▁Hand made ▁Jew el ry , ▁which ▁included ▁the ▁work ▁of ▁studio ▁j ew el ers ▁like ▁Margaret ▁De ▁Pat ta ▁and ▁Paul ▁Lob el , ▁along ▁with ▁j ew el ry ▁by ▁modern ist ▁artists ▁such ▁as ▁Alexander ▁Cal der , ▁Jacques ▁Lip ch itz ▁and ▁Richard ▁P ous ette - D art . ▁This ▁exhibition ▁tou red ▁the ▁United ▁States , ▁and ▁was ▁followed ▁by ▁a ▁series ▁of ▁influ ential ▁exhib itions ▁at ▁the ▁Walker ▁Art ▁Center ▁in ▁Min ne apolis . ▁Kelly ▁L ' E cu yer ▁suggests ▁that ▁" Cal der ' s ▁j ew el ry ▁was ▁central ▁to ▁many ▁of ▁the ▁museum ▁and ▁gallery ▁exhib itions ▁of ▁this ▁period , ▁and ▁he ▁continues ▁to ▁be ▁viewed ▁as ▁the ▁sem inal ▁figure ▁in ▁American ▁contemporary ▁j ew el ry ." ▁Using ▁cold ▁construction ▁and ▁cru de ▁techniques ▁that ▁suggested ▁a ▁spirit ▁of ▁impro vis ation ▁and ▁cre ativity , ▁Cal der ' s ▁j ew el ry ▁shares ▁his ▁sculpt ure ' s ▁use ▁of ▁line ▁and ▁movement ▁to ▁dep ict ▁or ▁imply ▁space , ▁creating ▁j ew el ry ▁that ▁often ▁moves