Natural Diamond Necklaces

Natural diamond necklaces in 18K solid gold. Solitaire pendants, tennis necklaces, and station designs, each with earth-mined GIA-certified diamonds. The heirloom-quality necklace category.

241 products
14K
Natural

14K 1.81ct Round Cut Natural Diamond Pendant Necklace

1.81ct · Round
$38,442
14K
Natural

14K 0.55ct Marquise Shaped Natural Diamond Chain Necklace

0.55ct · Marquise
$16,476
14K
Natural

14K 1.05ct Pear Shaped Natural Diamond Solitaire Necklace

1.05ct · Pear · Solitaire
$69,039
14K
Natural

14K 0.9ct Marquise Shaped Natural Diamond Cluster Pendant Necklace

0.9ct · Marquise · Cluster
$18,045
14K
14K
Natural

14K 0.9ct Marquise Shaped Natural Diamond Cluster Chain Necklace

0.9ct · Marquise · Cluster
$21,967
14K
Natural

14K 0.68ct Marquise Shaped Natural Diamond Chain Necklace

0.68ct · Marquise
$20,398
14K
Natural

14K 1.88ct Emerald Cut Natural Diamond Pendant Necklace

1.88ct · Emerald
$34,912
14K
Natural

14K 0.7ct Pear Shaped Natural Diamond Pendant Necklace

0.7ct · Pear
$22,752
14K
Natural

14K 1.29ct Marquise Shaped Natural Diamond Cluster Pendant Necklace

1.29ct · Marquise · Cluster
$29,813
14K
Natural

14K 1.65ct Round Cut Natural Diamond Lariat Necklace

1.65ct · Round
$40,796
14K
Natural

14K 1ct Pear Shaped Natural Diamond Halo Pendant Necklace

1ct · Pear · Halo
$27,459
14K
14K
14K
Natural

14K 1ct Round Cut Natural Diamond Necklace

1ct · Round · Bezel
$21,183
14K
Natural

14K 2.62ct Round Cut Natural Diamond Lariat Necklace

2.62ct · Bezel
$47,857
14K
Natural

14K 1.33ct Round Cut Natural Diamond Necklace

1.33ct · Bezel
$32,166
14K
Natural

14K 0.75ct Round Cut Natural Diamond Chain Necklace

0.75ct · Bezel
$25,105
14K
Natural

14K 3ct Round Cut Natural Diamond Eternity Necklace

3ct · Eternity
$49,426
14K

Showing 48 of 241

A natural diamond necklace is the piece of jewellery most likely to be passed down. It sits close to the neck, it gets worn for the biggest moments, and it holds its value better than almost anything else you can put around your collarbone.

Solitaire pendants

The natural diamond pendant necklace is the most classic piece in the category. 1 ct is the most popular, 0.50 ct is the subtle everyday choice, and 2 ct starts to become an occasion piece.

Tennis necklaces

A natural diamond tennis necklace is the single most dramatic piece in our collection , 10 to 25 total carat weight of matched diamonds around the neck. It is the anniversary-milestone piece, the generational heirloom, the piece that becomes the centrepiece of a jewellery box.

Stations and layering

Station necklaces space a small number of natural diamonds along a fine chain for a more subtle effect. Layering chains work alongside a pendant and a watch for a modern, lived-in look.

Provenance

Every natural diamond on the collection is Kimberley Process certified and GIA-graded. The supply chain is auditable back to the mine. We include the certificate with every piece.

Bespoke

The necklace category is where bespoke requests most often come in. Customers want a specific centre stone in a specific pendant design. Start your bespoke natural diamond necklace.

Frequently Asked Questions

What size natural diamond pendant should I buy?

1 ct is our most popular size. Visible, elegant, not ostentatious. 0.50 ct is a good subtle everyday piece. 2 ct starts to become a statement piece. For a wedding gift, 1-1.5 ct is the sweet spot.

How much does a natural diamond tennis necklace cost?

Our natural diamond tennis necklaces start at around $15,000 for 10 tcw and rise to $80,000+ for 25 tcw. This is the highest-value category we sell. Typically milestone anniversary or 50th-birthday purchases.

Are natural diamond necklaces a good investment?

A GIA-certified natural diamond over 1 ct generally holds 40-60% of retail on the secondary market, better than most fine jewellery categories. Rare coloured diamonds have historically appreciated.

What chain length should I choose?

18 inches is the default. Sits just below the collarbone. 16 inches is choker-like. 20-22 inches drops lower and layers well with shorter chains.

How do I clean a natural diamond necklace?

Warm water, mild soap, soft toothbrush around the pendant and clasp. Bring it in annually for professional cleaning. Free for life on all Riyanika pieces.

Can I upgrade my natural diamond pendant later?

Yes. Our lifetime upgrade programme lets you trade in any Riyanika piece and put 100% of its purchase price toward a more expensive one.