1Luxury Miami's diamond necklace collection centers on the tennis necklace — round brilliant diamonds set edge to edge in an unbroken line of fire, in 14K white and yellow gold. Carat weights range from 5ct up to a full 12ct, so there's a version for a first fine-jewelry purchase and a version for the kind of piece you build a wardrobe around.

Every tennis necklace here is available in both lab-grown and natural diamond options, so you can choose the carat weight and budget that works for you without changing the look. Stones are graded H-I color, SI1-SI2 clarity, set in a straight-line eternity setting that reads as continuous sparkle rather than individual stones.

These are made-to-order pieces, sized between 16" and 24", so the necklace fits the neckline you're actually dressing — not a generic length. Whether you're shopping for a diamond tennis necklace as a gift, an anniversary piece, or something you're buying for yourself, each one ships with a certificate of authenticity and the same attention to setting quality regardless of carat weight.

Explore the collection by carat, gold color, and diamond type to find the necklace that matches your budget and the amount of sparkle you're after.