I have a lot of buttons and no stone, I know I need to invest in a stone at some point but if I scratch the button and drip a drop of test acid on the button, lets just say 10k, how long should I leave the acid on the button with no reaction? a lot of buttons have little or no reaction in the first few minutes-30 minutes, but if I leave it overnight they will develop a small green/blue discoloration around the button.
Is that just the test acid eventually breaking down the base metal? and if so, does that mean its a lower Karat? or that is just going to happen to any impurities in acid over time regardless?
I have read elsewhere that (with testing on a stone anyway) no reaction after 15-30 seconds is good enough, I have also read minutes etc. when testing jewelry for gold plating. I haven't come across anything regarding test time for buttons however and am just looking for some input, Thank you in advance!
Is that just the test acid eventually breaking down the base metal? and if so, does that mean its a lower Karat? or that is just going to happen to any impurities in acid over time regardless?
I have read elsewhere that (with testing on a stone anyway) no reaction after 15-30 seconds is good enough, I have also read minutes etc. when testing jewelry for gold plating. I haven't come across anything regarding test time for buttons however and am just looking for some input, Thank you in advance!