Lab Grown Diamond Necklace

Lab-grown diamond necklaces in 18K solid gold. Solitaire pendants, tennis necklaces, station designs and statement drops. Every stone GIA-certified. Real diamonds, meaningful carat weight, wearable prices.

260 products
18K
Lab Grown

18K 2.25ct Round Cut Lab Grown Diamond Choker Necklace

2.25ct · Round
$76,884
18K
Lab Grown

18K 0.48ct Marquise Shaped Lab Grown Diamond Pendant Necklace

0.48ct · Marquise
$19,221
18K
Lab Grown

18K 1.21ct Round Cut Lab Grown Diamond Pendant Necklace

1.21ct · Round
$20,791
18K
Lab Grown

18K 0.36ct Baguette Cut Lab Grown Diamond Bezel Pendant

0.36ct · Baguette · Bezel
$19,614
18K
Lab Grown

18K 0.55ct Marquise Shaped Lab Grown Diamond Chain Necklace

0.55ct · Marquise
$19,614
18K
Lab Grown

18K 1.81ct Round Cut Lab Grown Diamond Pendant Necklace

1.81ct · Round
$22,360
18K
Lab Grown

18K 1.05ct Pear Shaped Lab Grown Diamond Solitaire Necklace

1.05ct · Pear · Solitaire
$19,221
18K
Lab Grown

18K 0.87ct Marquise Shaped Lab Grown Diamond Cluster Pendant Necklace

0.87ct · Marquise · Cluster
$21,183
18K
Lab Grown

18K 1.11ct Marquise Shaped Lab Grown Diamond Cluster Necklace

1.11ct · Marquise · Cluster
$21,967
18K
Lab Grown

18K 1.55ct Oval Shaped Lab Grown Diamond Lariat Necklace

1.55ct · Oval
$25,105
18K
Lab Grown

18K 0.87ct Round Cut Lab Grown Diamond Cluster Pendant Necklace

0.87ct · Round · Cluster
$20,398
18K
Lab Grown

18K 1.17ct Round Cut Lab Grown Diamond Pendant Necklace

1.17ct · Round
$21,183
18K
Lab Grown

18K 0.9ct Marquise Shaped Lab Grown Diamond Cluster Pendant Necklace

0.9ct · Marquise · Cluster
$21,183
18K
Lab Grown

18K 2ct Emerald Cut Lab Grown Diamond Pendant Necklace

2ct · Emerald
$21,967
18K
Lab Grown

18K 0.7ct Pear Shaped Lab Grown Diamond Pendant Necklace

0.7ct · Pear
$18,437
18K
18K
Lab Grown

18K 1.65ct Cushion Cut Lab Grown Diamond Halo Necklace

1.65ct · Halo
$22,360
18K
Lab Grown

18K 2.48ct Round Cut Lab Grown Diamond Necklace

2.48ct · Round
$25,105
18K
Lab Grown

18K 1ct Round Cut Lab Grown Diamond Necklace

1ct · Round
$21,183
18K
Lab Grown

18K 1.72ct Princess Cut Lab Grown Diamond Statement Necklace

1.72ct · Princess
$24,321

Showing 168 of 260

A lab-grown diamond necklace is the category where the price advantage shows most clearly. A 1 ct solitaire pendant in a natural diamond costs around $6,000. The same piece in a lab-grown diamond costs around $1,200. That gap is what lets you own a real, certified diamond necklace as an everyday piece rather than an occasion one.

Types

Solitaire pendants are the most-worn daily piece. Tennis necklaces run diamonds the full length of the chain for occasion wear. Station necklaces space diamonds along the chain for a subtle, modern look. Layering chains are designed to be worn two or three at a time.

By shape

Match the diamond shape to the mood. Emerald cut for architectural clean lines. Marquise for elongation. Pear for drop silhouettes. Round for classic sparkle.

Chain lengths

Our default is 18 inches, which sits just below the collarbone. Choose 16 inches for a choker look, 20-22 inches for a longer drop or layering. Every necklace ships with an adjustable chain unless stated.

What's included

GIA grading report for every centre stone over 0.30 ct. 18K solid gold (yellow, white or rose), hallmarked. Signature gift box. Lifetime cleaning service.

Shop lab-grown necklaces

Start with the solitaire pendants or the tennis necklaces. For bespoke carat or chain length, start your design.

Frequently Asked Questions

Are lab-grown diamond necklaces as good as natural?

Visually, yes. They sparkle the same and look identical. Lab-grown depreciates faster on the secondary market, but for a necklace you plan to wear and keep, that is rarely the deciding factor.

What length chain should I buy?

18 inches is the default and works with most necklines. Go 16 inches for a choker feel or 20-22 inches if you want the pendant to sit lower or intend to layer.

Can I swim or shower with a lab-grown diamond necklace?

You can shower. Avoid pools (chlorine weakens gold alloys) and salt water. Dry the chain before putting it back on to prevent any sulphur tarnish on the clasp.

How much does a lab-grown diamond solitaire necklace cost?

Our lab-grown solitaire pendants start at around $400 for 0.50 ct and rise to $2,500 for 3 ct. A 1 ct lab-grown pendant, our most popular size, is around $1,000.

Is the chain solid gold?

Yes. Both the chain and the pendant are 18K solid gold, hallmarked. We do not do plated or filled chains.

Can I engrave the pendant?

On most pendant designs, yes. Initials, a date, or a short phrase on the back. Engraving adds 3-5 business days to the ship time. Engraved pieces are final sale.