It is means the color of the sea, the best colur of aquamarine is blue, if the cristals didn't got this nice colour it possible to heat, it make a little bit blue color to the stone.
In the last weekend i found in a box two old aqua. cristals, i bought them in Münich in 2007. I cut them for good size to faceting, i selected one of them and gluid to the dop.
I start tu cut with the pavilon with my 320 grit steel lap, i had to cut a lot of material from the cristal for the pavilon angles.
After i used the 1200 grit steel lap, 1200 Nu Bond lap and white cerium to polish.
The polishing was easy, the stone is same hard like the quartz variations, the cerium oxide is working good for this hardness. I needed only few second to each facet to polish.
When i finished the pavilon, i trasnfered the stone and start with the crown. I used my 600 grit steel lap to preform, i like this lap to preform, don't leave deep scratches like 320, so, after the 600 steel i used the 1200 steel and 1200 Nu Bond. The polish also the same like on the pavilon.
The rough stone was small, the finished stone more small, in the end is 5mm hexagonal.