Skip to content

Lab-Grown Diamond Necklaces & Pendants

Necklaces and pendants meant to sit close and stay there - through the school run, the workday, the years. IGI-certified lab-grown diamonds in solid 14K gold, on a chain that adjusts across three lengths in one piece.

Pieces in this collection (6)

Finding Your Diamond Necklace

Explore six lab-grown diamond pendant designs from 1.06 to 2.07 CTW, including round brilliant, pear, heart, and radiant shapes. Solitaire pendants keep the focus on one diamond, while multi-stone arrangements create a broader line of light. Every necklace is made in solid 14K white or yellow gold with E-F colour diamonds and product-specific IGI documentation. Each 18-inch chain includes jump rings at 16 and 17 inches, giving you three wearing lengths for open necklines, crew necks, or layered combinations.

Frequently Asked Questions

What lengths do your diamond necklaces come in?

Every current Carat Theory pendant comes on an 18" chain with jump rings at 16" and 17", giving you three wearing lengths in one necklace.

Are lab-grown diamond necklaces real diamonds?

Yes - lab-grown diamonds are real diamonds, not simulants. They share the same carbon crystal structure as mined diamonds and are certified by IGI with the same 4Cs grading report.

What gold karat is best for a necklace?

Every current Carat Theory necklace is made in solid 14K white or yellow gold, rather than gold-filled or plated metal. Check the product page for the available gold colour.

Can I wear a diamond necklace every day?

Yes. Diamond necklaces in solid 14K gold are built for daily wear. Remove before showering, swimming, or applying perfume to preserve the chain's integrity and the stone's brilliance over time.

How do I layer diamond necklaces?

Mix lengths at least 2" apart - for example, a 16" choker, an 18" solitaire pendant, and a 20" longer chain. Vary the weight and style to create dimension without tangling.

Do diamond necklaces tarnish?

Solid 14K gold is more resistant to wear than plated metal, but skin oils and product residue can still dull its surface. Clean it gently with warm water, mild soap, and a soft brush, then dry it with a lint-free cloth.

What diamond sizes and shapes are in the necklace collection?

The six current designs range from 1.06 to 2.07 CTW and include round brilliant, pear, heart, and radiant diamonds. Each product page lists the exact total weight, shapes, dimensions, colour, clarity, and IGI report information.