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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

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Allum & Sidaway Jewellery A&S Engagement Collection 18ct Yellow Gold 0.50ct Diamond 3 Stone Ring 0120262
Allum & Sidaway Jewellery A&S Engagement Collection 18ct Yellow Gold 0.50ct Diamond 3 Stone Ring 0120262

A&S Engagement Collection 18ct Yellow Gold 0.50ct Diamond 3 Stone Ring

Allum & Sidaway

£2,150.00

Allum & Sidaway Jewellery A&S Engagement Collection Platinum 0.25ct Diamond Solitaire 0120441
Allum & Sidaway Jewellery A&S Engagement Collection Platinum 0.25ct Diamond Solitaire 0120441

A&S Engagement Collection Platinum 0.25ct Diamond Solitaire

Allum & Sidaway

£1,795.00

Fine Jewellery Jewellery Platinum 0.80ct Diamond Twist Solitaire With Stone Set Shoulders 0101859
11% off

Platinum 0.80ct Diamond Twist Solitaire With Stone Set Shoulders

Fine Jewellery

£4,500.00 £3,995.00

Allum & Sidaway Jewellery A&S Engagement Collection Platinum 0.50ct Diamond 3 Stone Ring 0120561
Allum & Sidaway Jewellery A&S Engagement Collection Platinum 0.50ct Diamond 3 Stone Ring 0120561

A&S Engagement Collection Platinum 0.50ct Diamond 3 Stone Ring

Allum & Sidaway

£2,150.00

Allum & Sidaway Jewellery A&S Engagement Collection 18ct Yellow Gold 0.50ct Diamond Solitaire 0120504

A&S Engagement Collection 18ct Yellow Gold 0.50ct Diamond Solitaire

Allum & Sidaway

£2,595.00

Allum & Sidaway Jewellery A&S Engagement Collection 18ct Yellow Gold 0.34ct Diamond Solitaire 0120404

A&S Engagement Collection 18ct Yellow Gold 0.34ct Diamond Solitaire

Allum & Sidaway

£1,850.00

Allum & Sidaway Jewellery A&S Engagement Collection Platinum 0.32ct Oval Cut Diamond Solitaire 0120571
Allum & Sidaway Jewellery A&S Engagement Collection Platinum 0.32ct Oval Cut Diamond Solitaire 0120571

A&S Engagement Collection Platinum 0.32ct Oval Cut Diamond Solitaire

Allum & Sidaway

£1,895.00

Allum & Sidaway Jewellery A&S Engagement Collection Platinum 0.26ct Diamond Solitaire With Diamond Set Shoulders 0120521
Allum & Sidaway Jewellery A&S Engagement Collection Platinum 0.26ct Diamond Solitaire With Diamond Set Shoulders 0120521

A&S Engagement Collection Platinum 0.26ct Diamond Solitaire With Diamond Set Shoulders

Allum & Sidaway

£2,295.00

Allum & Sidaway Jewellery A&S Engagement Collection Platinum 0.25ct Diamond Solitaire With Diamond Set Shoulders 0120421
Allum & Sidaway Jewellery A&S Engagement Collection Platinum 0.25ct Diamond Solitaire With Diamond Set Shoulders 0120421

A&S Engagement Collection Platinum 0.25ct Diamond Solitaire With Diamond Set Shoulders

Allum & Sidaway

£2,295.00

Allum & Sidaway Jewellery A&S Engagement Collection Platinum 0.51ct Diamond Solitaire With Diamond Set Shoulders 0120325
Allum & Sidaway Jewellery A&S Engagement Collection Platinum 0.51ct Diamond Solitaire With Diamond Set Shoulders 0120325

A&S Engagement Collection Platinum 0.51ct Diamond Solitaire With Diamond Set Shoulders

Allum & Sidaway

£3,250.00

Allum & Sidaway Jewellery A&S Engagement Collection Platinum 0.25ct Diamond Solitaire With Diamond Set Shoulders 0120321
Allum & Sidaway Jewellery A&S Engagement Collection Platinum 0.25ct Diamond Solitaire With Diamond Set Shoulders 0120321

A&S Engagement Collection Platinum 0.25ct Diamond Solitaire With Diamond Set Shoulders

Allum & Sidaway

£2,295.00

Allum & Sidaway Jewellery A&S Engagement Collection Platinum 0.61ct Diamond Solitaire 0120307

A&S Engagement Collection Platinum 0.61ct Diamond Solitaire

Allum & Sidaway

£3,495.00

Allum & Sidaway Jewellery A&S Engagement Collection Platinum 0.51ct Diamond Solitaire With Diamond Set Shoulders 0120225
Allum & Sidaway Jewellery A&S Engagement Collection Platinum 0.51ct Diamond Solitaire With Diamond Set Shoulders 0120225

A&S Engagement Collection Platinum 0.51ct Diamond Solitaire With Diamond Set Shoulders

Allum & Sidaway

£3,250.00

Allum & Sidaway Jewellery A&S Engagement Collection Platinum 0.60ct Diamond Solitaire 0120207

A&S Engagement Collection Platinum 0.60ct Diamond Solitaire

Allum & Sidaway

£3,495.00

Allum & Sidaway Jewellery A&S Engagement Collection Platinum 0.33ct Diamond Solitaire 0120303

A&S Engagement Collection Platinum 0.33ct Diamond Solitaire

Allum & Sidaway

£1,850.00

Allum & Sidaway Jewellery A&S Engagement Collection Platinum 0.33ct Diamond Solitaire 0120203

A&S Engagement Collection Platinum 0.33ct Diamond Solitaire

Allum & Sidaway

£1,850.00

Allum & Sidaway Jewellery A&S Engagement Collection Platinum 0.31ct Diamond Solitaire 0120103

A&S Engagement Collection Platinum 0.31ct Diamond Solitaire

Allum & Sidaway

£1,850.00

Fine Jewellery Jewellery 18ct Yellow Gold 0.10ct Diamond Filigree Necklace 1417035
16% off

18ct Yellow Gold 0.10ct Diamond Filigree Necklace

Fine Jewellery

£950.00 £795.00

Fine Jewellery Jewellery 18ct White Gold 0.43ct Diamond Swirl Stud Earrings 1210843
29% off

18ct White Gold 0.43ct Diamond Swirl Stud Earrings

Fine Jewellery

£1,395.00 £995.00

Fine Jewellery Jewellery 18ct Yellow Gold 0.38ct Diamond Filigree Stud Earrings 1210842
26% off

18ct Yellow Gold 0.38ct Diamond Filigree Stud Earrings

Fine Jewellery

£1,350.00 £995.00

Fine Jewellery Jewellery 18ct Yellow Gold 0.19ct Diamond Filigree Stud Earrings 1210841
22% off

18ct Yellow Gold 0.19ct Diamond Filigree Stud Earrings

Fine Jewellery

£895.00 £695.00

Fine Jewellery Jewellery 18ct Yellow Gold 0.11ct Diamond Filigree Bracelet 1106110
31% off

18ct Yellow Gold 0.11ct Diamond Filigree Bracelet

Fine Jewellery

£650.00 £450.00

Fine Jewellery Jewellery 18ct Yellow Gold 0.21ct Diamond Floral Half Eternity Ring 0115098
26% off

18ct Yellow Gold 0.21ct Diamond Floral Half Eternity Ring

Fine Jewellery

£1,495.00 £1,100.00

Fine Jewellery Jewellery 18ct White Gold Diamond Flower Stud Earrings 1210839
37% off

18ct White Gold Diamond Flower Stud Earrings

Fine Jewellery

£3,150.00 £1,995.00

Fine Jewellery Jewellery 18ct White Gold 1.41ct Diamond Drop Earrings 1210837
Fine Jewellery Jewellery 18ct White Gold 1.41ct Diamond Drop Earrings 1210837
17% off

18ct White Gold 1.41ct Diamond Drop Earrings

Fine Jewellery

£4,195.00 £3,500.00

Fine Jewellery Jewellery 18ct White Gold 0.70ct Diamond Cross-over Ring 0115096
33% off

18ct White Gold 0.70ct Diamond Cross-over Ring

Fine Jewellery

£2,630.00 £1,750.00

Fine Jewellery Jewellery 18ct White Gold 0.50ct Diamond 5 Stone Ring 0105189
38% off

18ct White Gold 0.50ct Diamond 5 Stone Ring

Fine Jewellery

£1,785.00 £1,100.00

Fine Jewellery Jewellery 18ct White Gold 1.03ct Diamond 3 Stone Cluster Ring 0103345
32% off

18ct White Gold 1.03ct Diamond 3 Stone Cluster Ring

Fine Jewellery

£4,400.00 £2,995.00

Georg Jensen Jewellery Jewellery Georg Jensen Silver Grape And Diamond Necklace 2203041
20% off

Georg Jensen Silver Grape And Diamond Necklace

Georg Jensen Jewellery

£470.00 £376.00

Fine Jewellery Jewellery 18ct White Gold 0.90ct Diamond Double Halo Cluster Ring 0111166
34% off

18ct White Gold 0.90ct Diamond Double Halo Cluster Ring

Fine Jewellery

£3,995.00 £2,650.00

Fine Jewellery Jewellery 18ct White Gold 2 Row Diamond Hinged Hoop Earrings 1210828
30% off

18ct White Gold 2 Row Diamond Hinged Hoop Earrings

Fine Jewellery

£4,450.00 £3,100.00

Fine Jewellery Jewellery 9ct Yellow, White And Rose Gold 0.15ct Diamond Openwork Ring 0189547
18% off

9ct Yellow, White And Rose Gold 0.15ct Diamond Openwork Ring

Fine Jewellery

£550.00 £450.00

Clogau Jewellery Clogau 9ct Yellow Gold Bohemia Stud Earrings 2110097

Clogau 9ct Yellow Gold Bohemia Stud Earrings

Clogau

£374.00

Clogau Jewellery Clogau Silver Cariad Diamond Necklace 2104036

Clogau Silver Cariad Diamond Necklace

Clogau

£290.00

Clogau Jewellery Clogau 9ct Rose Gold Tree Of Life Diamond Heart Stud Earrings 2101163

Clogau 9ct Rose Gold Tree Of Life Diamond Heart Stud Earrings

Clogau

£370.00

Fine Jewellery Jewellery 18ct White Gold 3.00ct Graduated Diamond Collar 1401929
40% off

18ct White Gold 3.00ct Graduated Diamond Collar

Fine Jewellery

£12,500.00 £7,500.00

Fine Jewellery Jewellery 18ct White Gold 1.58ct Diamond Half Eternity Ring 0189491
38% off

18ct White Gold 1.58ct Diamond Half Eternity Ring

Fine Jewellery

£4,800.00 £2,995.00

Fine Jewellery Jewellery 18ct Rose Gold 0.40ct Diamond And Pearl Drop Earrings 1214943
48% off

18ct Rose Gold 0.40ct Diamond And Pearl Drop Earrings

Fine Jewellery

£3,340.00 £1,750.00

Fine Jewellery Jewellery 18ct Rose Gold 0.33ct Cognac Diamond 3 Stone Ring 0103315
24% off

18ct Rose Gold 0.33ct Cognac Diamond 3 Stone Ring

Fine Jewellery

£1,250.00 £950.00

Fine Jewellery Jewellery 18ct Rose Gold 0.52ct Coffee Diamond Solitaire With Diamond Set Shoulders 0101796
35% off

18ct Rose Gold 0.52ct Coffee Diamond Solitaire With Diamond Set Shoulders

Fine Jewellery

£1,695.00 £1,100.00

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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.