Ebay offers 3/4-tcw Lab Grown Solitaire Diamond Ring in 14K Gold for $675.99 (Reg $1500) with free shipping.

Product Description:
Polished gleaming 14 karat white gold is the foundation for a stunning premium solitaire diamond engagement ring featuring a sparkling 0.75 carat (ctw Color G-H-I, SI1-SI2) lab-grown diamond at it's center in this classic engagement ring style. Lab grown diamonds are man-made diamonds that are chemically, physically, and optically identical to diamonds originating from nature. Both have the same chemical composition and atomic structure, producing the very same durability, fire, and sparkle, the only different is origin. This ring is the ultimate classic solitaire design offered to you at the right price.