... things I almost have forgotten...doesn’t matter..while I haven’t expected anything, it does making me more happy ..it’s like getting a new gift..one treasure, two gifts..not bad, isn’t it?!.. anyway, this beautiful skull head is made of a kind of jade by an artist who knows what he does...and it’s around 100 grams..perfect for holding in the hand as a relaxing piece..and I’m sure, these gems have healing power, every piece and every kind of has its special power..and i guess you should decide intuitively, what gems you are using or having around you...and whenever you have the feeling you should change the stone, still do it...your intuition knows what you need...believe..and enjoy..