pawnshop worker uses chemical reagents to determine the authenticity of gold jewelry, evaluation of gold items in a pawnshop, fake

acid authenticity business buy carat check chemical client closeup concept control determine euro evaluation examining fake gem glass gold hand holding identity inspecting items jewel jeweller jewellery jewelry lambard lens looking luxury magnifying money occupation pawn pawnshop popshop precious quality reaction reagent reagents repair ring sale scales sell shop silver stone store try uses verify worker