For sale is a brand new, never used, genuine and authentic: 
David Yurman 6x12mm Wheaton Ring with Moon/Milky Quartz and Diamonds
-It lists for $1025
-Size 6 (may fit slightly smaller because band is wide) 
-Beautiful approximately 16mm x 12mm smooth Moon/Milky Quartz rectangular stone that is mostly transluscent with a whitish tint. 
-Stone flanked by pave diamonds (CTW 0.136) 
-4 fused cabled bands taper to approximately 0.25" at the back
-The inner ring is marked with "(C)D.Y. 925"
-The ring comes in a David Yurman gift box with a David Yurman Pouch, polishing cloth, and certificate of authenticity.
-I ship for free with USPS priority mail with insurance and signature confirmation.  I also offer express service for $15.