Hello guys so another tips for earning silver
First , if you have poor stone ( green ) for weapon or armor and if you have a lot of it and you cant sell it
All you need to do find a rare gear ( blue ) enchance it with the poor stone to +16
And put your gear into the extractor to extract black stone
And boom ! You got yourself a grand black stone that worth 4 millions silver
For the detail watch below !
Hope this helps :)