Walnut shell, fine, 500 g ☆☆☆

Perfect for all precious metals, for polishing and cleaning of jewellery and for prepolishing of amber.

For the dry use with a rotary or vibratory tumbler.

Grain size: 1.3 - 1,7 mm
Hardness in Mohs: 2.5
Spec.weight:  app. 0.92 g/cml
Real weight: app. 0.72 g/cml