First off remove ure jewel.
next, get ure sand paper(i used emerycloth bcos i had no paper)
now, tape down some paper(dont do it like this, use doublsided tape)
then, roll up some tape into a triangle to hold between two fingers and the top of the jewel
next, use circular motions on the paper till the green is gone
now, use a finer paper
then, apply some thoothpaste to the finest paper you have and use circular motions!!
now, apply paste to an a4 page(it shud b kinda crispy)
next, look at your fine jewel!!!
10min to do. 30min to write about it!