Visit one of our stores today!

Free shipping on all orders over £100, special delivery!

0% APR Interest free credit available

Your cart
Your cart is empty

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

Clear filters
Fine Jewellery Jewellery 18ct White Gold 0.56ct Diamond Clover Necklace 1417323
39% off

18ct White Gold 0.56ct Diamond Clover Necklace

Fine Jewellery

$4,664.00 $2,864.00

Fine Jewellery Jewellery 18ct White Gold 0.85ct Diamond Clover Stud Earrings 1210948
18% off

18ct White Gold 0.85ct Diamond Clover Stud Earrings

Fine Jewellery

$6,266.00 $5,114.00

Fine Jewellery Jewellery 9ct Yellow Gold 0.08ct Diamond Open Heart Necklace 1417319

9ct Yellow Gold 0.08ct Diamond Open Heart Necklace

Fine Jewellery

$1,153.00

Fine Jewellery Jewellery 9ct Yellow Gold Diamond Set Circle Stud Earrings 1210947
21% off

9ct Yellow Gold Diamond Set Circle Stud Earrings

Fine Jewellery

$607.00 $478.00

Fine Jewellery Jewellery 18ct White Gold 0.10ct Diamond 2 Stone Bangle 1113094
Fine Jewellery Jewellery 18ct White Gold 0.10ct Diamond 2 Stone Bangle 1113094
37% off

18ct White Gold 0.10ct Diamond 2 Stone Bangle

Fine Jewellery

$2,387.00 $1,500.00

Fine Jewellery Jewellery 18ct White Gold 0.05ct Diamond Bangle 1113100
Fine Jewellery Jewellery 18ct White Gold 0.05ct Diamond Bangle 1113100
39% off

18ct White Gold 0.05ct Diamond Bangle

Fine Jewellery

$2,448.00 $1,500.00

Fine Jewellery Jewellery 18ct White Gold 1.59ct Diamond Bangle 1113114
Fine Jewellery Jewellery 18ct White Gold 1.59ct Diamond Bangle 1113114
27% off

18ct White Gold 1.59ct Diamond Bangle

Fine Jewellery

$7,363.00 $5,386.00

Fine Jewellery Jewellery 18ct Yellow Gold 2.56ct Diamond Bangle 1113113
Fine Jewellery Jewellery 18ct Yellow Gold 2.56ct Diamond Bangle 1113113
31% off

18ct Yellow Gold 2.56ct Diamond Bangle

Fine Jewellery

$9,409.00 $6,477.00

Allum & Sidaway Jewellery A&S Engagement Collection 18ct Yellow Gold 0.70ct Diamond Solitaire With Diamond Set Shoulders 0120128

A&S Engagement Collection 18ct Yellow Gold 0.70ct Diamond Solitaire With Diamond Set Shoulders

Allum & Sidaway

$6,675.00

Fine Jewellery Jewellery 18ct White Gold 0.45ct Diamond Wave Fancy Half Eternity Ring 0115171
Fine Jewellery Jewellery 18ct White Gold 0.45ct Diamond Wave Fancy Half Eternity Ring 0115171
31% off

18ct White Gold 0.45ct Diamond Wave Fancy Half Eternity Ring

Fine Jewellery

$3,477.00 $2,393.00

Fine Jewellery Jewellery 9ct White Gold 0.12ct Diamond Cross Necklace 1417269
24% off

9ct White Gold 0.12ct Diamond Cross Necklace

Fine Jewellery

$887.00 $675.00

Fine Jewellery Jewellery 18ct White Gold 0.41ct Diamond Twist Hoop Earrings 1220092
19% off

18ct White Gold 0.41ct Diamond Twist Hoop Earrings

Fine Jewellery

$2,864.00 $2,318.00

Fine Jewellery Jewellery 18ct Yellow Gold 0.05ct Diamond Talon Drop Earrings 1210917
20% off

18ct Yellow Gold 0.05ct Diamond Talon Drop Earrings

Fine Jewellery

$675.00 $539.00

Fine Jewellery Jewellery 18ct Yellow Gold 0.75ct Salt And Pepper Diamond Cluster Ring 0111388
30% off

18ct Yellow Gold 0.75ct Salt And Pepper Diamond Halo Ring

Fine Jewellery

$3,198.00 $2,250.00

Fine Jewellery Jewellery 9ct White Gold 0.37ct Princess Cut Diamond Cluster Ring 0111380
17% off

9ct White Gold 0.37ct Princess Cut Diamond Cluster Ring

Fine Jewellery

$1,357.00 $1,125.00

Fine Jewellery Jewellery 18ct White Gold 0.16ct Diamond Cluster Ring 0111175
40% off

18ct White Gold 0.16ct Diamond Cluster Ring

Fine Jewellery

$1,473.00 $887.00

Fine Jewellery Jewellery 18ct Yellow Gold 1.02ct Diamond 5 Stone Ring 0105184
27% off

18ct Yellow Gold 1.02ct Diamond 5 Stone Ring

Fine Jewellery

$6,545.00 $4,773.00

Fine Jewellery Jewellery Platinum 0.80ct Diamond Solitaire Ring 0101642
37% off

Platinum 0.80ct Diamond Solitaire Ring

Fine Jewellery

$5,448.00 $3,409.00

Fine Jewellery Jewellery Platinum 0.75ct Diamond Solitaire Ring 0101267
27% off

Platinum 0.75ct Diamond Solitaire Ring

Fine Jewellery

$7,500.00 $5,448.00

Fine Jewellery Jewellery 18ct White Gold 1.50ct Diamond Fancy Necklace 1417294
Fine Jewellery Jewellery 18ct White Gold 1.50ct Diamond Fancy Necklace 1417294
16% off

18ct White Gold 1.50ct Diamond Fancy Necklace

Fine Jewellery

$6,518.00 $5,448.00

Fine Jewellery Jewellery 18ct Yellow Gold 1.00ct Diamond Half Eternity Ring 0114328
34% off

18ct Yellow Gold 1.00ct Diamond Half Eternity Ring

Fine Jewellery

$5,045.00 $3,341.00

Fine Jewellery Jewellery 9ct White Gold 0.23ct Diamond Oval Cluster Ring 0111406
17% off

9ct White Gold 0.23ct Diamond Oval Cluster Ring

Fine Jewellery

$1,228.00 $1,023.00

Fine Jewellery Jewellery Platinum 0.90ct Diamond 5 Stone Ring 0105211
16% off

Platinum 0.90ct Diamond 5 Stone Ring

Fine Jewellery

$5,700.00 $4,773.00

Fine Jewellery Jewellery 9ct Yellow Gold 0.06ct Diamond Twist Necklace 1417304

9ct Yellow Gold 0.06ct Diamond Twist Necklace

Fine Jewellery

$716.00

Fine Jewellery Jewellery 18ct White Gold 0.20ct Diamond Solitaire Necklace 1417289
19% off

18ct White Gold 0.20ct Diamond Solitaire Necklace

Fine Jewellery

$1,555.00 $1,262.00

Fine Jewellery Jewellery 9ct White Gold 0.25ct Diamond Trefoil Stud Earrings 1210940

9ct White Gold 0.25ct Diamond Trefoil Stud Earrings

Fine Jewellery

$853.00

Fine Jewellery Jewellery 9ct Yellow Gold 0.25ct Diamond Link Ring 0115156
21% off

9ct Yellow Gold 0.25ct Diamond Link Ring

Fine Jewellery

$1,296.00 $1,023.00

Fine Jewellery Jewellery 9ct Yellow Gold 0.33ct Diamond Scatter Ring 0115150

9ct Yellow Gold 0.33ct Diamond Scatter Ring

Fine Jewellery

$1,500.00

Fine Jewellery Jewellery 18ct Yellow Gold 0.32ct Diamond Scatter Ring 0115146
17% off

18ct Yellow Gold 0.32ct Diamond Scatter Ring

Fine Jewellery

$1,800.00 $1,500.00

Fine Jewellery Jewellery Platinum 0.76ct Salt And Pepper Diamond Cluster Ring 0111394
29% off

Platinum 0.76ct Salt And Pepper Diamond Cluster Ring

Fine Jewellery

$3,839.00 $2,721.00

Fine Jewellery Jewellery 18ct Yellow Gold 0.35ct Diamond Half Eternity Ring 0107137
21% off

18ct Yellow Gold 0.35ct Diamond Half Eternity Ring

Fine Jewellery

$1,650.00 $1,296.00

Fine Jewellery Jewellery 18ct White Gold 0.40ct Diamond Solitaire Necklace 1417291
21% off

18ct White Gold 0.40ct Diamond Solitaire Necklace

Fine Jewellery

$2,932.00 $2,312.00

Fine Jewellery Jewellery 18ct White Gold 0.30ct Diamond Solitaire Necklace 1417290
Fine Jewellery Jewellery 18ct White Gold 0.30ct Diamond Solitaire Necklace 1417290
30% off

18ct White Gold 0.30ct Diamond Solitaire Necklace

Fine Jewellery

$2,128.00 $1,500.00

Fine Jewellery Jewellery 18ct White Gold 0.50ct Diamond Stud Earrings 1210938
23% off

18ct White Gold 0.50ct Diamond Stud Earrings

Fine Jewellery

$2,584.00 $1,978.00

Fine Jewellery Jewellery 18ct White Gold 0.72ct Diamond Stud Earrings 1210920
25% off

18ct White Gold 0.72ct Diamond Stud Earrings

Fine Jewellery

$3,607.00 $2,721.00

Fine Jewellery Jewellery 18ct White And Yellow Gold 4.19ct White And Yellow Diamond Cluster Bracelet 1106139
Fine Jewellery Jewellery 18ct White And Yellow Gold 4.19ct White And Yellow Diamond Cluster Bracelet 1106139
23% off

18ct White And Yellow Gold 4.19ct White And Yellow Diamond Cluster Bracelet

Fine Jewellery

$20,453.00 $15,681.00

Fine Jewellery Jewellery 18ct White Gold 0.32ct Diamond Scatter Ring 0115147
30% off

18ct White Gold 0.32ct Diamond Scatter Ring

Fine Jewellery

$1,943.00 $1,357.00

Fine Jewellery Jewellery 18ct White Gold 0.18ct Diamond Cluster Ring 0111389
25% off

18ct White Gold 0.18ct Diamond Cluster Ring

Fine Jewellery

$1,725.00 $1,296.00

Fine Jewellery Jewellery 18ct White Gold 0.83ct Diamond Double Drop Cluster Necklace 1417272
25% off

18ct White Gold 0.83ct Diamond Double Drop Cluster Necklace

Fine Jewellery

$5,448.00 $4,084.00

Fine Jewellery Jewellery 18ct White Gold 0.23ct Diamond Cross Necklace 1417268
28% off

18ct White Gold 0.23ct Diamond Cross Necklace

Fine Jewellery

$1,753.00 $1,262.00

Load more

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.