PalmBeach Jewelry 12.86 TCW Oval Cut Cubic Zirconia Silvertone Aurora Borealis Ring FREE SHIPPING on orders of $30.00 or more - Top Rated Seller - Trusted Since 1952 - 90 Day Guarantee - Easy Returns - Free PalmBeach Jewelry Gift Box 12.86 carat 18x13mm Oval shaped center stone Cubic Zirconia is the premier diamond simulant; CZ is both affordable and brilliantly flawless. Ring Style: Cocktail Breathtaking aurora borealis cubic zirconia ring captures the moment with 12.86 carats of stunning color and style. Defining today's most important trends. Silver tone. Sizes 6-10. (All carat weights are approximate and may vary slightly from those listed.)