![ET-18 Mizar Electronic Gold Tester ET-18 Mizar Electronic Gold Tester](https://cdn11.bigcommerce.com/s-iic0hc/images/stencil/300x300/products/38442/48759/56.818__35028.1658864206.jpg?c=2)
New large size gold and silver testing stone. Precious metal acid testing stone should serve you for hundreds of chemical tests. Purchase this natural gold testing stones when you need a new high quality surface for your testing chemicals. Used when using test acids for gold jewelry and watches.
- Size 6" x 4" inches
- Thickness 0.5" inches