What is IGI certification?

The International Gemological Institute (IGI) is a leading independent laboratory that evaluates and grades diamonds. An IGI certificate guarantees the authenticity, quality, and specific characteristics (cut, colour, clarity, and carat) of our lab-grown diamonds, giving you complete confidence in your purchase.

Why choose lab-grown diamonds?

Lab-grown diamonds are physically, chemically, and optically identical to natural diamonds. They offer exceptional value and beauty while being created in highly controlled environments, making them a brilliant choice for modern fine jewellery.

Do you offer a warranty?

Yes. We stand behind our craftsmanship with a complimentary lifetime warranty on all pieces.

How long does delivery take?

• Ready-to-ship pieces are dispatched within 24 hours • Bespoke creations are typically delivered within 3–4 weeks

Do you offer a warranty?

Yes. All Masaat London pieces are covered by a complimentary lifetime warranty.

Exquisite Diamond Necklace and Pendants

Masaat's necklace collection spans diamond pendants, solitaire and halo designs, and fine or paperclip chains, crafted to order in the United Kingdom in 18ct gold and platinum, and designed to sit elegantly at any neckline.

Three Stone Oval Cut Diamond Necklace

Fine Chain

From £149.93 per month

£1,999

Heart Cut Diamond Necklace

Fine Chain

From £149.93 per month

£1,999

Oval Cut East-West Diamond Necklace

Fine Chain

From £149.93 per month

£1,999

Pear Cut North-South Diamond Necklace

Fine Chain

From £149.93 per month

£1,999

Cushion Cut Diamond Necklace

Fine Chain

From £149.93 per month

£1,999

Marquise Cut Diamond Necklace

Fine Chain

From £149.93 per month

£1,999

Emerald Cut Diamond Necklace

Fine Chain

From £149.93 per month

£1,999

Asscher Cut Diamond Necklace

Fine Chain

From £149.93 per month

£1,999

Bezel Set Heart Cut Diamond Necklace

Fine Chain

From £149.93 per month

£1,999

Bezel Set Oval Cut East-West Diamond Necklace

Fine Chain

From £149.93 per month

£1,999

Bezel Set Pear Cut North-South Diamond Necklace

Fine Chain

From £149.93 per month

£1,999

Bezel Set Cushion Cut Diamond Necklace

Fine Chain

From £149.93 per month

£1,999

Bezel Set Marquise Cut Diamond Necklace

Fine Chain

From £149.93 per month

£1,999

Bezel Set Emerald Cut Diamond Necklace

Fine Chain

From £149.93 per month

£1,999

Bezel Set Asscher Cut Diamond Necklace

Fine Chain

From £149.93 per month

£1,999

Ships in 24 hours

9 2.20ct Oval Cut Aquamarine Bezel Set Paperclip Chain Necklace

From £142.43 per month

£1,899

Showing 217–232 of 232 products

Exquisite Diamond Necklace and Pendants

Three Stone Oval Cut Diamond Necklace

Fine Chain

From £149.93 per month

£1,999

Heart Cut Diamond Necklace

Fine Chain

From £149.93 per month

£1,999

Oval Cut East-West Diamond Necklace

Fine Chain

From £149.93 per month

£1,999

Pear Cut North-South Diamond Necklace

Fine Chain

From £149.93 per month

£1,999

Cushion Cut Diamond Necklace

Fine Chain

From £149.93 per month

£1,999

Marquise Cut Diamond Necklace

Fine Chain

From £149.93 per month

£1,999

Emerald Cut Diamond Necklace

Fine Chain

From £149.93 per month

£1,999

Asscher Cut Diamond Necklace

Fine Chain

From £149.93 per month

£1,999

Bezel Set Heart Cut Diamond Necklace

Fine Chain

From £149.93 per month

£1,999

Bezel Set Oval Cut East-West Diamond Necklace

Fine Chain

From £149.93 per month

£1,999

Bezel Set Pear Cut North-South Diamond Necklace

Fine Chain

From £149.93 per month

£1,999

Bezel Set Cushion Cut Diamond Necklace

Fine Chain

From £149.93 per month

£1,999

Bezel Set Marquise Cut Diamond Necklace

Fine Chain

From £149.93 per month

£1,999

Bezel Set Emerald Cut Diamond Necklace

Fine Chain

From £149.93 per month

£1,999

Bezel Set Asscher Cut Diamond Necklace

Fine Chain

From £149.93 per month

£1,999

Ships in 24 hours

9 2.20ct Oval Cut Aquamarine Bezel Set Paperclip Chain Necklace

From £142.43 per month

£1,899

Showing 217–232 of 232 products