Sometimes more is more. And that diamond you love would be even more lovable with a bit more sparkle. We can help. You may, at any future date, trade in an undamaged center diamond of 1/5 carat or over, for another diamond of at least double the trade-in value. The trade-in value is the original purchase price of the diamond, excluding mounting and sales tax. Colored gemstone jewelry, and diamond clusters or cocktail rings are not eligible for trade-in.