Gr88 This is an Australian party sapphire that we oftheearthgems have faceted. with this parti colored sapphire i have taken a photograph with the stone on it's back. if you want to see the distribution of color in a stone this is a good way to do it. as can be seen in this photograph the stone is predominantly yellow with a very small cloud of blue at the tip. this small cloud is responsible for the beautiful blue color you see when looking along the c axis at the crown of the stone. it is only when you tilt the stone away from the c axis that you then see the yellow appear. it is quite an amazing optical affect. truly makes this a rare and unique stone. while the process may be able to be copied there wont be very many stones in the world that look like this.