I have this ring available in many colors! This ring is also available in: crystal copper, crystal clear, crystal AB, peridot, light smoked topaz, jet, black diamond, aquamarine, amethyst, rosaline, red magma.
The bead measures about 14mm.
I can make it in any size and in-between size you need. Please include your size in the comments to seller.
Here are more crystal options http://www.etsy.com/shop/phoebestreasure?section_id=5240079