Adobe Illustrator: Diamonds! The Polar Grid

The diamond was made by using a Polar Grid which I then added a 45 degrees square to. I then used the Line segment tool to add lines from the circle up to the square.  I used the Direct Select tool to remove some spokes. Rotated the diamond 22.5 degrees and added to black and white gradient.

I then placed the diamond on a black rectangle. I used the text tool and the sparkle was made using the star tool.