Buy Lab Grown Diamond Tennis & Eternity Necklaces

A tennis or eternity necklace is the pinnacle of classic luxury—featuring a seamless strand of brilliant diamonds that circle the neck in perfect harmony. At The Karat Store, our lab grown diamond tennis & eternity necklaces offer this coveted style with the added value of ethical sourcing and modern craftsmanship.

Each necklace is handcrafted in 100% solid 14K & 18K gold, available in white, yellow, or rose tones. The diamonds are lab-grown, identical in composition and brilliance to natural diamonds, but sustainably created using cutting-edge technology. These diamonds are IGI certified, ensuring every piece meets strict standards for cut, clarity, and carat weight.

Choose from delicate tennis chains with smaller carat sizes for everyday elegance, or go bold with high-carat eternity collars that bring red-carpet glamour to your wardrobe. All stones are meticulously set in secure prongs or bezels, offering both brilliance and lasting durability.

These necklaces are beloved across the USA for their timeless design and upscale finish—perfect for weddings, anniversaries, milestone gifts, or just because. Their symmetrical beauty and radiant flow make them ideal as heirlooms or luxury staples that elevate even the simplest outfit.

Each piece is hand-set by experienced artisans, inspected for perfection, and delivered to your door with care and confidence. The Karat Store promises sparkle you can trust—and luxury you can feel good about.