Lab Grown Diamond Necklaces

Lab grown diamond necklaces range from a single solitaire pendant on a fine chain to a full tennis necklace set with diamonds all the way around. This hub collects our pendant and necklace guides and explains how stone shape, setting, chain length and clasp type affect how a necklace looks and wears, so you can choose a piece for everyday wear or a special occasion with confidence.

Popular pendant styles

• Solitaire pendant: one diamond, usually in a four- or six-prong or bezel setting. Simple and easy to wear every day.
• Halo pendant: small diamonds circle the center stone for extra sparkle and a larger overall look.
• Pear, emerald-cut and heart pendants: fancy shapes give a classic pendant a more personal feel.
• Symbol pendants: crosses, initials and other motifs set with small diamonds.

Tennis necklaces

A tennis necklace is a flexible line of individually set diamonds of similar size. It is usually described by total carat weight. Look closely at the clasp and at how each stone is held, because a tennis necklace flexes with every movement.

Choose the chain length

Necklace lengths are measured in inches. As a general guide, 16 inches tends to sit near the collarbone on many people and 18 inches sits a little lower and is one of the most common lengths for pendants, while 20 inches and longer drops toward the neckline. Where the chain falls depends on your neck size and build, so adjustable chains with an extra ring or slider are useful when you are buying for someone else.

Chains, clasps and metals

Thin cable and box chains suit small pendants, while rope and wheat chains look heavier and stand up to everyday wear. Lobster clasps are generally easier to handle and more secure than small spring rings. As with rings, white gold is often rhodium plated, and yellow gold, rose gold and platinum avoid that upkeep.

How to compare necklaces

Check the stone size in millimeters as well as carat weight, the diamond color and clarity range, the chain length and whether the chain is included, and whether a grading report comes with the center stone. A necklace is also a frequent gift choice, so see our lab-grown diamond gift guides for ideas and our buying guides for grading basics. We do not quote prices we cannot verify, so confirm current prices and return policies with the retailer.

How we write these guides

Our guides draw on published grading standards, retailer product information and FTC guidance. We do not claim hands-on testing unless a guide says so, and we never invent prices, ratings or reviews. New guides appear below as they are published.