I'm lvl 61 and from what I can tell the only legitimate way to get to lvl 62 is from grinding monsters.  A large portion of the experience gained from grinding monsters at lvl 61 comes from regular Marni Stones.  

I just recently got a Great Marni Stone, however I can't work on the Great Marni Stone (60,000 mobs defeated to complete) at the same time as filling regular Marni Stones.  This forces me to have to decide between gaining valuable experience or filling the Great Marni Stone.  Leveling from 61 to 62 is already an intense and time consuming grind, and this just makes it painfully and unnecessarily longer for someone in my position.  

To put it in perspective as to what it means to lose the exp from 60,000 mobs worth of regular Marni Stones:

•    Marni Stone II = 0.1% exp
•    2,500 mobs killed per 1.5 hours (avg. # of mobs I kill per 1.5 hours) = 0.5% worth of Marni Stone exp
•    60,000 / 2,500 = 24
•    24 x 1.5 hours = 36 hours of grinding;  24 x 0.5% exp = 12% exp

Apologies if that is confusing to read, but what it means is that if I want to fill 1 Great Marni Stone I lose 36 hours and 12% exp worth of grinding.  If I grind 3 hours a day, that's like throwing 12 days down the drain. 

So please, I beg you, allow simultaneous filling of both regular Marni Stones and Great Marni Stones.  As it stands right now, receiving a Great Marni Stone severely hinders the ability to level your character from 61 to 62, which is already time consuming without this issue.    

Its really not a issue if u want xp only have xp marni stones in inventory if u want accessories use great marni it's very simple

Yea I realized when I got home I could remove it from inventory.  I was under the impression that they worked like regular marni stones, which if I'm not mistaken can't be removed from inventory.  

I still think it's very unnecessary to not allow both to be filled at the same time.  Killing 60,000 mobs and missing out on 12% exp is rough.  And vise versa, using exp marni stones in attempt to get to 62, would mean I would miss out on filling the great marni stone at least 4-5 times

Appreciate the feedback though! 

Thank you so much for the suggestion! I have added it to our daily suggestion report. ??