Here is a Gia Certified 21.72Ct Aquamarine & Diamond Pendant set in 18k Green, Rose & Yellow Gold by Daniel Arthur Jelladian. I made and sold this piece. If you would like a 17-20ct Darker Blue Aquamarine comparable to this it will cost $11,000. This Gorgeous Blue Aqua is surrounded by Baguette and Round Diamonds set in 18k Gold. Dan@LuxuryWorld.com