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Check out these collections.

Allum & Sidaway Ear Styling Collection
Allum & Sidaway Engagement Collection
Initial Necklaces

Diamond Jewellery

Discover our diamond jewellery collection at Allum & Sidaway, where exceptional craftsmanship meets enduring elegance. Including beautifully crafted diamond rings, refined diamond necklaces, elegant diamond earrings, and many more captivating choices, each piece is designed to be treasured for a lifetime.

Diamond Jewellery

747 Results

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Fine Jewellery Jewellery 9ct White Gold 0.25ct Flower Cluster Necklace 1417266
19% off

9ct White Gold 0.25ct Flower Cluster Necklace

Fine Jewellery

£985.00 £795.00

Fine Jewellery Jewellery 9ct White Gold 0.25ct Diamond Cluster Necklace 1417261
18% off

9ct White Gold 0.25ct Diamond Cluster Necklace

Fine Jewellery

£845.00 £695.00

Fine Jewellery Jewellery 18ct Yellow Gold 0.41ct Diamond Twist Hoop Earrings 1220090
22% off

18ct Yellow Gold 0.41ct Diamond Twist Hoop Earrings

Fine Jewellery

£2,175.00 £1,700.00

Fine Jewellery Jewellery 9ct White Gold 0.20ct Diamond Rubover Stud Earrings 1210910
30% off

9ct White Gold 0.20ct Diamond Rubover Stud Earrings

Fine Jewellery

£895.00 £625.00

Fine Jewellery Jewellery 9ct White Gold 0.50ct Diamond Flower Cluster Stud Earrings 1210904
36% off

9ct White Gold 0.50ct Diamond Flower Cluster Stud Earrings

Fine Jewellery

£1,550.00 £995.00

Allum & Sidaway Jewellery A&S Engagement Collection Platinum 0.25ct Diamond Solitaire 0120141
Allum & Sidaway Jewellery A&S Engagement Collection Platinum 0.25ct Diamond Solitaire 0120141

A&S Engagement Collection Platinum 0.25ct Diamond Solitaire

Allum & Sidaway

£1,795.00

Fine Jewellery Jewellery 9ct White Gold 0.05ct Diamond Initial S Necklace 1417133

9ct White Gold 0.05ct Diamond Initial S Necklace

Fine Jewellery

£345.00

Fine Jewellery Jewellery 9ct Yellow Gold 0.07ct Diamond Initial E Necklace 1417131

9ct Yellow Gold 0.07ct Diamond Initial E Necklace

Fine Jewellery

£495.00

Fine Jewellery Jewellery 9ct Yellow Gold 0.05ct Diamond Initial C Necklace 1417129
22% off

9ct Yellow Gold 0.05ct Diamond Initial C Necklace

Fine Jewellery

£450.00 £350.00

Fine Jewellery Jewellery 18ct White Gold 0.52ct Diamond Graduated Drop Necklace 1417123
28% off

18ct White Gold 0.52ct Diamond Graduated Drop Necklace

Fine Jewellery

£2,095.00 £1,500.00

Fine Jewellery Jewellery 9ct White Gold 0.76ct Diamond Scatter Stud Earrings 1210902
39% off

9ct White Gold 0.76ct Diamond Scatter Stud Earrings

Fine Jewellery

£1,795.00 £1,100.00

Fine Jewellery Jewellery 18ct Yellow Gold 0.43ct Diamond 7 Stone Ring 0107133
22% off

18ct Yellow Gold 0.43ct Diamond 7 Stone Ring

Fine Jewellery

£2,695.00 £2,100.00

Fine Jewellery Jewellery 18ct White Gold 1.38ct Diamond Flower Necklace 1417114
22% off

18ct White Gold 1.38ct Diamond Flower Necklace

Fine Jewellery

£6,395.00 £4,995.00

Fine Jewellery Jewellery 18ct White Gold 0.40ct Diamond Stud Earrings 1210899
37% off

18ct White Gold 0.40ct Diamond Stud Earrings

Fine Jewellery

£1,995.00 £1,250.00

Allum & Sidaway Jewellery A&S Engagement Collection Platinum 0.81ct Diamond Solitaire Ring 0120509
Allum & Sidaway Jewellery A&S Engagement Collection Platinum 0.81ct Diamond Solitaire Ring 0120509

A&S Engagement Collection Platinum 0.81ct Diamond Solitaire Ring

Allum & Sidaway

£5,495.00

Allum & Sidaway Jewellery A&S Engagement Collection Platinum 1.00ct Diamond Solitaire Ring 0120411
Allum & Sidaway Jewellery A&S Engagement Collection Platinum 1.00ct Diamond Solitaire Ring 0120411

A&S Engagement Collection Platinum 1.00ct Diamond Solitaire Ring

Allum & Sidaway

£7,945.00

Allum & Sidaway Jewellery A&S Engagement Collection Platinum 0.94ct Diamond Solitaire Ring 0120310

A&S Engagement Collection Platinum 0.94ct Diamond Solitaire Ring

Allum & Sidaway

£6,995.00

Allum & Sidaway Jewellery A&S Engagement Collection Platinum 0.80ct Diamond Solitaire Ring 0120309
Allum & Sidaway Jewellery A&S Engagement Collection Platinum 0.80ct Diamond Solitaire Ring 0120309

A&S Engagement Collection Platinum 0.80ct Diamond Solitaire Ring

Allum & Sidaway

£5,495.00

Allum & Sidaway Jewellery A&S Engagement Collection Platinum 1.02ct Diamond Solitaire Ring 0120213
Allum & Sidaway Jewellery A&S Engagement Collection Platinum 1.02ct Diamond Solitaire Ring 0120213

A&S Engagement Collection Platinum 1.02ct Diamond Solitaire Ring

Allum & Sidaway

£7,945.00

Fine Jewellery Jewellery 18ct White Gold Diamond Infinity Ring 0115136
31% off

18ct White Gold Diamond Infinity Ring

Fine Jewellery

£1,750.00 £1,200.00

Fine Jewellery Jewellery Platinum 0.33ct Chocolate Diamond Cluster Ring 0111323

Platinum 0.33ct Chocolate Diamond Cluster Ring

Fine Jewellery

£2,295.00

Fine Jewellery Jewellery 18ct White Gold 0.41ct Yellow Diamond Cluster Ring 0111320
34% off

18ct White Gold 0.41ct Yellow Diamond Cluster Ring

Fine Jewellery

£2,950.00 £1,950.00

Fine Jewellery Jewellery 18ct White Gold 0.63ct Yellow Diamond 3 Stone Ring 0103396
31% off

18ct White Gold 0.63ct Yellow Diamond 3 Stone Ring

Fine Jewellery

£3,250.00 £2,250.00

Fine Jewellery Jewellery 9ct White Gold 0.20ct Diamond Flower Cluster Necklace 1401788
25% off

9ct White Gold 0.20ct Diamond Flower Cluster Necklace

Fine Jewellery

£835.00 £625.00

Fine Jewellery Jewellery Platinum 0.65ct Diamond Scatter Ring 0115131
33% off

Platinum 0.65ct Diamond Scatter Ring

Fine Jewellery

£2,995.00 £1,995.00

Fine Jewellery Jewellery 18ct Yellow And White Gold 0.52ct Diamond Scatter Wave Ring 0115130
9% off

18ct Yellow And White Gold 0.52ct Diamond Scatter Wave Ring

Fine Jewellery

£3,140.00 £2,850.00

Fine Jewellery Jewellery Platinum 0.47ct Princess Cut Diamond Double Halo Ring 0111319
32% off

Platinum 0.47ct Princess Cut Diamond Double Halo Ring

Fine Jewellery

£2,345.00 £1,595.00

Fine Jewellery Jewellery Platinum 0.44ct Diamond 7 Stone Half Eternity Ring 0107130
29% off

Platinum 0.44ct Diamond 7 Stone Half Eternity Ring

Fine Jewellery

£2,320.00 £1,650.00

Fine Jewellery Jewellery Platinum 1.13ct Diamond 3 Stone Ring 0103397
16% off

Platinum 1.13ct Diamond 3 Stone Ring

Fine Jewellery

£6,950.00 £5,850.00

Fine Jewellery Jewellery 9ct White Gold 0.50ct Diamond Flower Cluster Stud Earrings 1210587
Fine Jewellery Jewellery 9ct White Gold 0.50ct Diamond Flower Cluster Stud Earrings 1210587
27% off

9ct White Gold 0.50ct Diamond Flower Cluster Stud Earrings

Fine Jewellery

£1,225.00 £895.00

Fine Jewellery Jewellery 9ct White Gold 0.40ct Diamond Flower Cluster Stud Earrings 1210586

9ct White Gold 0.40ct Diamond Flower Cluster Stud Earrings

Fine Jewellery

£1,040.00

Fine Jewellery Jewellery 9ct White Gold 0.30ct Diamond Flower Cluster Stud Earrings 1210585
Fine Jewellery Jewellery 9ct White Gold 0.30ct Diamond Flower Cluster Stud Earrings 1210585

9ct White Gold 0.30ct Diamond Flower Cluster Stud Earrings

Fine Jewellery

£785.00

Fine Jewellery Jewellery 9ct White Gold 0.20ct Diamond Flower Cluster Stud Earrings 1210584

9ct White Gold 0.20ct Diamond Flower Cluster Stud Earrings

Fine Jewellery

£510.00

Fine Jewellery Jewellery 9ct White Gold 0.15ct Diamond Flower Cluster Stud Earrings 1210583

9ct White Gold 0.15ct Diamond Flower Cluster Stud Earrings

Fine Jewellery

£445.00

Fine Jewellery Jewellery 18ct Yellow Gold 0.06ct Diamond Solitaire Necklace 1417100
47% off

18ct Yellow Gold 0.06ct Diamond Solitaire Necklace

Fine Jewellery

£995.00 £525.00

Fine Jewellery Jewellery Platinum 0.09ct Diamond Wishbone Ring 0189554
18% off

Platinum 0.09ct Diamond Wishbone Ring

Fine Jewellery

£1,195.00 £975.00

Allum & Sidaway Jewellery A&S Engagement Collection Platinum 0.70ct Oval Cut Diamond Solitaire Ring 0120477
Allum & Sidaway Jewellery A&S Engagement Collection Platinum 0.70ct Oval Cut Diamond Solitaire Ring 0120477

A&S Engagement Collection Platinum 0.70ct Oval Cut Diamond Solitaire Ring

Allum & Sidaway

£4,495.00

Fine Jewellery Jewellery Platinum 0.21ct Diamond Cluster Ring 0111159
32% off

Platinum 0.21ct Diamond Halo Ring

Fine Jewellery

£1,620.00 £1,100.00

Fine Jewellery Jewellery Platinum 0.20ct Princess Cut Diamond Cluster Ring 0111314
24% off

Platinum 0.20ct Princess Cut Diamond Halo Ring

Fine Jewellery

£1,250.00 £950.00

Fine Jewellery Jewellery Platinum 0.29ct Diamond Double Cluster Ring 0111311
34% off

Platinum 0.29ct Diamond Double Halo Ring

Fine Jewellery

£1,295.00 £850.00

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Discover Our Selection of Diamond Jewellery

Our immaculate collection of diamond jewellery at Allum & Sidaway features a divine range of options to help you find the perfect choice, whether you’re treating that special someone or yourself. No matter if you’re looking for an everyday contemporary piece or wedding jewellery that your partner will cherish for years to come, you can find exceptional choices to suit all needs and tastes here. 

Laboratory-Grown Diamond Jewellery

In our collection, you can find many exquisite laboratory-grown diamond jewellery pieces. These retain all of the qualities of natural diamonds, while being significantly more affordable and conflict-free. With these choices, you can shop hand-crafted diamond jewellery that not only comes at a much lower price but has also been sourced from fully ethical origins.

If you’d like to know anything more about our UK diamond jewellery collection or any of our other timeless jewellery pieces, contact us today, and a member of our experienced team will gladly assist you.