The stone is a good, deep London Blue Topaz which is well cut with excellent color, and has lots of flash!

The center stone weighs 1.5 carats, and is surrounded by a full 60 points of CZ's.  (I can use diamonds if you want -- just select them at checkout)  I want you to go back and look at the picture for a second.  Notice the thickness of the prongs and the ring shank. 

This is a quality ring -- no shortcuts, hollowed out band, thin prongs, etc.  This is a nice ring, and it weighs in at 4+ grams of solid gold, which means it's a nice solid ring.