14K Gold 30 Pt Lab-Grown Diamond Tennis Chain, 4.5 mm, 18 to 22 Inches

A tennis chain of 30 pointers: 30 points is jeweler's shorthand for three tenths of a carat, and that is the size of each lab-grown diamond set one after another in 14K gold. At the 18 inch length that adds up to 28.70 carats of round lab-grown diamonds, E-F color and VS clarity, in a line 4.50 mm wide.

The details. The lab-grown diamonds are round, E-F in color, close to the top of the scale, and VS in clarity, so every stone in the line falls in the same high grade range, each one prong set in 14K gold. The chain is 4.50 mm wide; at 18 inches it carries 28.70 carats and weighs 25.75 grams.

Size and fit. Lengths are 18, 20 and 22 inches, in yellow, rose or white gold. 18 inches sits at the collarbone; 20 and 22 fall just below it. The longer lengths add stones, carats and weight. Like any tennis chain it can turn on the neck; a quick straighten in the mirror fixes it.

Care. Clean it with warm water, mild soap and a soft brush under the stones, where lotion collects; lab-grown diamonds take the same care as natural ones. Keep it from chlorine and harsh cleaners, lay it flat on its own, and have the prongs checked from time to time.

Buying it. Orders in the US ship with a TraxNYC appraisal that records the gram weight, the carat weight and the lab-grown diamond grade. At checkout you can add a warranty plan that covers manufacturing defects for 30, 180 or 365 days. Every order ships tracked. A jeweler at our store on 47th Street can walk you through this piece by phone at 212-TRAXNYC (212-872-9692) during business hours.