A touchstone bearing gold streaks was found in Banawali, which was probably used for testing the purity of gold (such a technique is still used in some parts of India).
Banawalist leiti kullavöötidega proovikivi (basaniit), mida tõenäoliselt kasutati kulla puhtuse testimiseks (sellist tehnikat kasutatakse mõnes India osas tänini).