Cushion Lab-Grown Diamond Solitaire Necklace

Square, but softened. The cushion keeps the rounded corners of an antique stone with the clean brightness of a modern one, and four prongs hold it so the sides stay open to light. At 3/4 or 1 carat it has real presence at the neckline, yet it still sits comfortably with a plain crew neck on an ordinary day.

Chain included. It arrives ready to wear on a solid 14K gold 1 mm cable chain, 18 inches long, with a spring-ring clasp. The chain is the same gold as the pendant you choose.

As a gift, this is the necklace for an anniversary that deserves a real stone: the tenth, the twentieth, or the one that follows a hard year. Both sizes are generous enough to say the occasion mattered.

Each cushion is lab-grown, 3/4 or 1 carat, VS in clarity and F–G in color. A larger stone raises a fair worry, that it might look fake. It cannot look like anything but a diamond, because it is one: grown rather than mined, with the same hardness and the same fire. At VS F–G there is no cloudiness or yellow tint for a cheap look to come from.

Approximate diamond size by weight: 3/4 ct about 5x5 mm; 1 ct about 6x6 mm.

Lab-grown is how a 1 ct cushion fits a budget that would buy a much smaller mined diamond, and the matching chain is part of the price, not an add-on. Select yellow, white or rose gold, then 3/4 or 1 ct.

Every order ships free and fully insured by UPS Ground; orders of $500 or more ship by complimentary UPS Express, signature required on delivery (a $50 upgrade below that). The ship estimate for your selection is shown beside the price. Returns are accepted within 30 days, and every piece carries our free lifetime warranty against manufacturing defects.