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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 18ct White And Yellow Gold 0.45ct Diamond Drop Necklace 1417113
45% off

18ct White And Yellow Gold 0.45ct Diamond Drop Necklace

Fine Jewellery

£1,995.00 £1,100.00

Fine Jewellery Jewellery 18ct Yellow Gold 0.33ct Diamond Scatter Hoop Earrings 1210901
35% off

18ct Yellow Gold 0.33ct Diamond Scatter Hoop Earrings

Fine Jewellery

£1,520.00 £995.00

Fine Jewellery Jewellery 9ct Yellow Gold 0.09ct Diamond Bracelet 1106126

9ct Yellow Gold 0.09ct Diamond Bracelet

Fine Jewellery

£475.00

Fine Jewellery Jewellery Platinum 1.04ct Diamond 3 Stone Ring 0103402
17% off

Platinum 1.04ct Diamond 3 Stone Ring

Fine Jewellery

£6,895.00 £5,750.00

Fine Jewellery Jewellery 18ct Yellow Gold 0.14ct Diamond Starfish Necklace 1417108
33% off

18ct Yellow Gold 0.14ct Diamond Starfish Necklace

Fine Jewellery

£1,425.00 £950.00

Fine Jewellery Jewellery 18ct Rose Gold 1.00ct Cognac Diamond Cluster Ring 0111316
24% off

18ct Rose Gold 1.00ct Cognac Diamond Cluster Ring

Fine Jewellery

£5,250.00 £3,995.00

Fine Jewellery Jewellery 9ct White Gold 0.20ct Diamond Solitaire Necklace 1417056

9ct White Gold 0.20ct Diamond Solitaire Necklace

Fine Jewellery

£655.00

Fine Jewellery Jewellery 18ct White Gold 0.33ct Diamond Hoop Earrings 1210829
39% off

18ct White Gold 0.33ct Diamond Hoop Earrings

Fine Jewellery

£1,795.00 £1,100.00

Fine Jewellery Jewellery 18ct White Gold Diamond Star Cluster Necklace 1401917
52% off

18ct White Gold Diamond Star Cluster Necklace

Fine Jewellery

£2,900.00 £1,400.00

Fine Jewellery Jewellery 18ct Rose, White And Yellow Gold 3 Row Diamond Scatter Ring 0115010
43% off

18ct Rose, White And Yellow Gold 3 Row Diamond Scatter Ring

Fine Jewellery

£2,185.00 £1,250.00

Fine Jewellery Jewellery 18ct White Gold Pave Cushion And Halo Diamond Ring 0111141
21% off

18ct White Gold Pave Cushion And Halo Diamond Ring

Fine Jewellery

£1,265.00 £995.00

Fine Jewellery Jewellery Platinum 1.61ct Natural Yellow Diamond 3 Stone Ring 0103258
14% off

Platinum 1.61ct Natural Yellow Diamond 3 Stone Ring

Fine Jewellery

£8,500.00 £7,350.00

Fine Jewellery Jewellery 18ct White Gold 3 Stone Diamond Ring With Tapered Baguette Cut Diamond Shoulders 0103206
42% off

18ct White Gold 3 Stone Diamond Ring With Tapered Baguette Cut Diamond Shoulders

Fine Jewellery

£2,995.00 £1,750.00

Fine Jewellery Jewellery Platinum Pear Cut 1.94ct Diamond Solitaire Ring 0101616
24% off

Platinum Pear Cut 1.94ct Diamond Solitaire Ring

Fine Jewellery

£12,825.00 £9,750.00

Fine Jewellery Jewellery 18ct White Gold 0.51ct Diamond Solitaire Ring 0101530
25% off

18ct White Gold 0.51ct Diamond Solitaire Ring

Fine Jewellery

£2,650.00 £1,995.00

Fine Jewellery Jewellery 18ct White Gold 0.17ct Diamond Fancy Half Eternity Ring 0114333
20% off

18ct White Gold 0.17ct Diamond Fancy Half Eternity Ring

Fine Jewellery

£1,245.00 £995.00

Fine Jewellery Jewellery 18ct White Gold 0.33ct Diamond Cluster Ring 0111242
19% off

18ct White Gold 0.33ct Diamond Cluster Ring

Fine Jewellery

£1,140.00 £925.00

Fine Jewellery Jewellery 18ct White Gold 0.30ct Diamond Cluster Ring 0111241
17% off

18ct White Gold 0.30ct Diamond Cluster Ring

Fine Jewellery

£1,200.00 £995.00

Fine Jewellery Jewellery Platinum 0.63ct Diamond 7 Stone Half Eternity Ring 0107144
28% off

Platinum 0.63ct Diamond 7 Stone Half Eternity Ring

Fine Jewellery

£3,450.00 £2,500.00

Trollbeads Jewellery Trollbeads Twinkle Nature Bead 0911110

Trollbeads Twinkle Nature Bead

Trollbeads

£62.00

Allum & Sidaway Jewellery A&S Ear Styling Collection 14ct White Gold Triple Baguette Cut Diamond Fan Single Stud Earring 1222158
Allum & Sidaway Jewellery A&S Ear Styling Collection 14ct White Gold Triple Baguette Cut Diamond Fan Single Stud Earring 1222158

A&S Ear Styling Collection 14ct White Gold Triple Baguette Cut Diamond Fan Single Stud Earring

Allum & Sidaway

£160.00

Fine Jewellery Jewellery 18ct White Gold 0.67ct Diamond Triple Ring Necklace 1417327
23% off

18ct White Gold 0.67ct Diamond Triple Ring Necklace

Fine Jewellery

£2,545.00 £1,950.00

Fine Jewellery Jewellery 18ct White Gold 0.50ct Diamond Cluster Drop Hoop Earrings 1210956
18% off

18ct White Gold 0.50ct Diamond Cluster Drop Hoop Earrings

Fine Jewellery

£2,995.00 £2,450.00

Fine Jewellery Jewellery 18ct White Gold 0.71ct Diamond Scatter Hoop Earrings 1210954
Fine Jewellery Jewellery 18ct White Gold 0.71ct Diamond Scatter Hoop Earrings 1210954
16% off

18ct White Gold 0.71ct Diamond Scatter Hoop Earrings

Fine Jewellery

£3,560.00 £2,995.00

Fine Jewellery Jewellery 18ct Yellow Gold 0.24ct Diamond Scatter Line Hoop Earrings 1210953
27% off

18ct Yellow Gold 0.24ct Diamond Scatter Line Hoop Earrings

Fine Jewellery

£1,850.00 £1,350.00

Fine Jewellery Jewellery 18ct White Gold 0.24ct Diamond Scatter Line Hoop Earrings 1210952
27% off

18ct White Gold 0.24ct Diamond Scatter Line Hoop Earrings

Fine Jewellery

£1,850.00 £1,350.00

Fine Jewellery Jewellery 18ct Yellow Gold 0.94ct Diamond 2 Row Scatter Bracelet 1106140
17% off

18ct Yellow Gold 0.94ct Diamond 2 Row Scatter Bracelet

Fine Jewellery

£5,995.00 £4,995.00

Fine Jewellery Jewellery 18ct White Gold 0.95ct Diamond Scatter Drop Earrings 1210949
Fine Jewellery Jewellery 18ct White Gold 0.95ct Diamond Scatter Drop Earrings 1210949
25% off

18ct White Gold 0.95ct Diamond Scatter Drop Earrings

Fine Jewellery

£5,295.00 £3,995.00

Fine Jewellery Jewellery 9ct White Gold 0.30ct Diamond Cluster Stud Earrings 1210934
24% off

9ct White Gold 0.30ct Diamond Cluster Stud Earrings

Fine Jewellery

£595.00 £450.00

Fine Jewellery Jewellery 18ct Yellow Gold 1.56ct Diamond Boat Ring 0188032
31% off

18ct Yellow Gold 1.56ct Diamond Boat Ring

Fine Jewellery

£3,999.00 £2,750.00

Fine Jewellery Jewellery 18ct White Gold 0.20ct Floating Diamond Ring 0188023
56% off

18ct White Gold 0.20ct Floating Diamond Ring

Fine Jewellery

£2,250.00 £995.00

Fine Jewellery Jewellery 18ct White, Yellow And Rose Gold 1.00ct Diamond Scatter Ring 0115172
21% off

18ct White, Yellow And Rose Gold 1.00ct Diamond Scatter Ring

Fine Jewellery

£4,595.00 £3,650.00

Fine Jewellery Jewellery Platinum 0.51ct Diamond Scatter Ring 0115089
22% off

Platinum 0.51ct Diamond Scatter Ring

Fine Jewellery

£3,125.00 £2,450.00

Fine Jewellery Jewellery 18ct White Gold 0.53ct Yellow Diamond Cluster Ring 0111415
24% off

18ct White Gold 0.53ct Yellow Diamond Cluster Ring

Fine Jewellery

£4,595.00 £3,500.00

Fine Jewellery Jewellery Platinum 1.00ct Diamond Flower Cluster Ring 0111378
25% off

Platinum 1.00ct Diamond Flower Cluster Ring

Fine Jewellery

£3,999.00 £2,995.00

Fine Jewellery Jewellery 18ct White Gold 1.00ct Diamond Double Cluster Ring 0111365
38% off

18ct White Gold 1.00ct Diamond Double Cluster Ring

Fine Jewellery

£4,850.00 £2,995.00

Fine Jewellery Jewellery Platinum 0.69ct Diamond Infinity Ring 0111337
33% off

Platinum 0.69ct Diamond Infinity Ring

Fine Jewellery

£5,950.00 £3,995.00

Fine Jewellery Jewellery 18ct White Gold 1.00ct Marquise Cut Diamond Cross Over Ring 0111336
37% off

18ct White Gold 1.00ct Marquise Cut Diamond Cross Over Ring

Fine Jewellery

£3,950.00 £2,500.00

Fine Jewellery Jewellery 18ct Yellow Gold 0.70ct Yellow Diamond 3 Stone Ring 0103452
19% off

18ct Yellow Gold 0.70ct Yellow Diamond 3 Stone Ring

Fine Jewellery

£7,750.00 £6,250.00

Clogau Jewellery Clogau 9ct Yellow Gold Lilibet Diamond Necklace 2104494

Clogau 9ct Yellow Gold Lilibet Diamond Necklace

Clogau

£946.00

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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.