There is an easy way to minin,but u gotta be at least lvl 70. This may take quite a long time, but its rli simple n u'll hardly ever be interrupted.
Its rli simple, just leave ure lvl 70 or above account in the desert city mine, and remember to have a empty inventory. Once u get a full bag of mines, u go to the pharmist n sell them to her. U can sell 60k-90k or more, becuz if u sell to player it'll take too long. Do this repeatably and u will get millions in hous. It is rli boring, n it does take quite some time, but while u do u can also make another account n lvl it up to keep ya occupied. But check at ure lvl 70 account oftenly or else it might get busted by any mine PKers or the lvl 92 rock monsters.
(if ure lucky, u might even get a violet/moongem tht might be either normal, refined and even super!)