Much agreed everyone. it is the intent or say the believe put into it. and "it" being a clear quartz "it" is known to be an amplifier like you say. so i guess in theory you are putting that potential energy into the stone that is what would gravitate out of it. Weather it be negative or positive.
I suggest running your stone in a creek, river or even cold running water {early morning} while chanting cleansing mantras or just think of the stone being pure while your doing this [15 min or when satisfied]{do this with the hand you write with}.
Then place your stone in a window or outside in the SUN to recharge. as you do this, do the same as above, place stone in writing hand and instead emit positive thoughts or the outcome you wish to percieve.
viola a recharged stone, do this if u are unsure about the stone because it is your belief that counts not someones interpitation of the symbology.
