Search found 1 match
- Sun Nov 15, 2015 8:32 am
- Forum: Silver Care / Techniques
- Topic: Gravity test
- Replies: 21
- Views: 43016
Re: Gravity test
I have been for more than 30 years in the jewelry business. And I have seen almost everything.... You can not rely only on acid tests, gravity testo or even spectometer tester. There are many gold and silver bars, with a thick "skin" of the metal, but with a different material inside (let'...