Hi , I was playing around with swish and i tryed to make a glass orb and i was successful! So I will share it with you.
First , Make a Circle of any color. Now Copy/paste that circle in the same spot.
Second , Make the circle u copied/pasted radial gradient and make the middle of the gradient 0% of the same color as the original circle.then the outside of the gradient 60% black.
Next , make a small circle and stretch it out a bit , make it radial gradient and make the outside of the gradient 0% white , then the inside 40% white.