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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 Platinum 0.24ct Diamond Double Cluster Ring 0111309
33% off

Platinum 0.24ct Diamond Double Cluster Ring

Fine Jewellery

$2,246.00 $1,497.00

Fine Jewellery Jewellery Platinum 0.30ct Oval Cut Diamond Cluster Ring 0189558

Platinum 0.30ct Oval Cut Diamond Cluster Ring

Fine Jewellery

$3,130.00

Fine Jewellery Jewellery 18ct White Gold 1.33ct Diamond Circle Necklace 1417103
25% off

18ct White Gold 1.33ct Diamond Circle Necklace

Fine Jewellery

$8,158.00 $6,124.00

Fine Jewellery Jewellery 18ct White Gold 0.81ct Diamond Hinged Hoop Earrings 1210892
27% off

18ct White Gold 0.81ct Diamond Hinged Hoop Earrings

Fine Jewellery

$4,593.00 $3,334.00

Fine Jewellery Jewellery 18ct Yellow Gold 0.12ct Diamond Twisted Hoop Earrings 1210890
33% off

18ct Yellow Gold 0.12ct Diamond Twisted Hoop Earrings

Fine Jewellery

$2,035.00 $1,354.00

Allum & Sidaway Jewellery A&S Engagement Collection 18ct Yellow Gold 0.34ct Diamond Ring With Diamond Set Shoulders 0120554

A&S Engagement Collection 18ct Yellow Gold 0.34ct Diamond Ring With Diamond Set Shoulders

Allum & Sidaway

$3,198.00

Allum & Sidaway Jewellery A&S Engagement Collection Platinum 1.00ct Oval Cut Diamond Solitaire Ring 0120476

A&S Engagement Collection Platinum 1.00ct Oval Cut Diamond Solitaire Ring

Allum & Sidaway

$11,969.00

Allum & Sidaway Jewellery A&S Engagement Collection Platinum 1.01ct Diamond 3 Stone Ring 0120463

A&S Engagement Collection Platinum 1.01ct Diamond 3 Stone Ring

Allum & Sidaway

$5,784.00

Allum & Sidaway Jewellery A&S Engagement Collection 18ct Yellow Gold 1.02ct Diamond 3 Stone Ring 0120264
Allum & Sidaway Jewellery A&S Engagement Collection 18ct Yellow Gold 1.02ct Diamond 3 Stone Ring 0120264

A&S Engagement Collection 18ct Yellow Gold 1.02ct Diamond 3 Stone Ring

Allum & Sidaway

$5,784.00

Allum & Sidaway Jewellery A&S Engagement Collection Platinum 0.34ct Diamond Ring With Diamond Set Shoulders 0120253

A&S Engagement Collection Platinum 0.34ct Diamond Ring With Diamond Set Shoulders

Allum & Sidaway

$3,124.00

Allum & Sidaway Jewellery A&S Engagement Collection 18ct Yellow Gold 0.50ct Diamond Solitaire With Diamond Set Shoulders 0120156

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

Allum & Sidaway

$4,423.00

Allum & Sidaway Jewellery A&S Engagement Collection Platinum 0.80ct Diamond Solitaire Ring 0120109
Allum & Sidaway Jewellery A&S Engagement Collection Platinum 0.80ct Diamond Solitaire Ring 0120109

A&S Engagement Collection Platinum 0.80ct Diamond Solitaire Ring

Allum & Sidaway

$7,478.00

Fine Jewellery Jewellery 18ct Yellow Gold 0.26ct Diamond Cluster Crossover Ring 0111307
20% off

18ct Yellow Gold 0.26ct Diamond Cluster Crossover Ring

Fine Jewellery

$1,899.00 $1,511.00

Fine Jewellery Jewellery Platinum 0.70ct Diamond 3 Stone Ring 0103385
19% off

Platinum 0.70ct Diamond 3 Stone Ring

Fine Jewellery

$7,342.00 $5,920.00

Fine Jewellery Jewellery 18ct Yellow Gold 0.32ct Diamond Crossover Ring 0115123
35% off

18ct Yellow Gold 0.32ct Diamond Crossover Ring

Fine Jewellery

$1,994.00 $1,293.00

Fine Jewellery Jewellery 9ct Yellow Gold 0.15ct Diamond Leaf Circle Necklace 1417091
36% off

9ct Yellow Gold 0.15ct Diamond Leaf Circle Necklace

Fine Jewellery

$1,531.00 $987.00

Fine Jewellery Jewellery 9ct White Gold 0.12ct Diamond Cluster Necklace 1417088
35% off

9ct White Gold 0.12ct Diamond Cluster Necklace

Fine Jewellery

$1,354.00 $885.00

Fine Jewellery Jewellery 9ct Yellow Gold 0.15ct Diamond Scatter Necklet 1417087

9ct Yellow Gold 0.15ct Diamond Scatter Necklet

Fine Jewellery

$1,082.00

Fine Jewellery Jewellery 9ct White Gold 0.23ct Baguette Cut Diamond Cluster Stud Earrings 1210886

9ct White Gold 0.23ct Baguette Cut Diamond Cluster Stud Earrings

Fine Jewellery

$1,144.00

Fine Jewellery Jewellery 9ct White Gold 0.40ct Diamond Cluster Necklace 1417098
Fine Jewellery Jewellery 9ct White Gold 0.40ct Diamond Cluster Necklace 1417098
14% off

9ct White Gold 0.40ct Diamond Cluster Necklace

Fine Jewellery

$1,423.00 $1,218.00

Fine Jewellery Jewellery 9ct White Gold 0.18ct Diamond Cross Necklace 1417095
24% off

9ct White Gold 0.18ct Diamond Cross Necklace

Fine Jewellery

$531.00 $402.00

Fine Jewellery Jewellery 18ct White Gold 0.41ct Yellow Diamond Drop Necklace 1417084
16% off

18ct White Gold 0.41ct Yellow Diamond Drop Necklace

Fine Jewellery

$4,627.00 $3,879.00

Fine Jewellery Jewellery 9ct White Gold 0.51ct Diamond Cluster Stud Earrings 1210889
21% off

9ct White Gold 0.51ct Diamond Cluster Stud Earrings

Fine Jewellery

$1,423.00 $1,123.00

Fine Jewellery Jewellery 18ct White Gold 0.32ct Diamond Knotted Stud Earrings 1210885
41% off

18ct White Gold 0.32ct Diamond Knotted Stud Earrings

Fine Jewellery

$2,307.00 $1,354.00

Fine Jewellery Jewellery 18ct Yellow Gold 0.45ct Diamond Double Row Half Eternity Ring 0115119
25% off

18ct Yellow Gold 0.45ct Diamond Double Row Half Eternity Ring

Fine Jewellery

$3,471.00 $2,593.00

Fine Jewellery Jewellery 18ct Yellow and White Gold Diamond Set Multi Row Ring 0115117
34% off

18ct Yellow and White Gold Diamond Set Multi Row Ring

Fine Jewellery

$3,994.00 $2,654.00

Fine Jewellery Jewellery 18ct Yellow Gold 0.76ct Diamond Cluster Ring 0111305
21% off

18ct Yellow Gold 0.76ct Diamond Cluster Ring

Fine Jewellery

$5,580.00 $4,423.00

Fine Jewellery Jewellery Platinum 0.73ct Diamond Marquise Cluster Ring 0111304
25% off

Platinum 0.73ct Diamond Marquise Cluster Ring

Fine Jewellery

$5,437.00 $4,076.00

Fine Jewellery Jewellery 18ct Yellow Gold 0.88ct Diamond Cluster Ring 0111303
25% off

18ct Yellow Gold 0.88ct Diamond Cluster Ring

Fine Jewellery

$6,328.00 $4,763.00

Allum & Sidaway Jewellery A&S Ear Styling Collection 14ct White Gold Diamond Trilogy Single Drop Earring 1222059
Allum & Sidaway Jewellery A&S Ear Styling Collection 14ct White Gold Diamond Trilogy Single Drop Earring 1222059

A&S Ear Styling Collection 14ct White Gold Diamond Trilogy Single Drop Earring

Allum & Sidaway

$164.00

Allum & Sidaway Jewellery A&S Ear Styling Collection 14ct White Gold Diamond Single Hoop Earring 1222058
Allum & Sidaway Jewellery A&S Ear Styling Collection 14ct White Gold Diamond Single Hoop Earring 1222058

A&S Ear Styling Collection 14ct White Gold Diamond Single Hoop Earring

Allum & Sidaway

$205.00

Allum & Sidaway Jewellery A&S Ear Styling Collection 14ct Yellow Gold Diamond Trilogy Single Drop Earring 1222054
Allum & Sidaway Jewellery A&S Ear Styling Collection 14ct Yellow Gold Diamond Trilogy Single Drop Earring 1222054

A&S Ear Styling Collection 14ct Yellow Gold Diamond Trilogy Single Drop Earring

Allum & Sidaway

$164.00

Allum & Sidaway Jewellery A&S Ear Styling Collection 14ct Yellow Gold Diamond Single Hoop Earring 1222053
Allum & Sidaway Jewellery A&S Ear Styling Collection 14ct Yellow Gold Diamond Single Hoop Earring 1222053

A&S Ear Styling Collection 14ct Yellow Gold Diamond Single Hoop Earring

Allum & Sidaway

$205.00

Fine Jewellery Jewellery 18ct White Gold 0.46ct Diamond Flower Necklace 1401996
45% off

18ct White Gold 0.46ct Diamond Flower Necklace

Fine Jewellery

$4,348.00 $2,382.00

Fine Jewellery Jewellery 18ct White Gold 0.51ct Diamond Butterfly Necklace 1401879
45% off

18ct White Gold 0.51ct Diamond Butterfly Necklace

Fine Jewellery

$2,715.00 $1,497.00

Fine Jewellery Jewellery 18ct White Gold 0.75ct Diamond Cluster Ring 0101894
28% off

18ct White Gold 0.75ct Diamond Cluster Ring

Fine Jewellery

$5,423.00 $3,879.00

Fine Jewellery Jewellery 9ct White Gold 0.25ct Diamond Solitaire Necklace 1417057

9ct White Gold 0.25ct Diamond Solitaire Necklace

Fine Jewellery

$1,123.00

Fine Jewellery Jewellery 9ct White Gold 0.10ct Diamond Solitaire Necklace 1417055
Fine Jewellery Jewellery 9ct White Gold 0.10ct Diamond Solitaire Necklace 1417055

9ct White Gold 0.10ct Diamond Solitaire Necklace

Fine Jewellery

$524.00

Fine Jewellery Jewellery 9ct White Gold 0.50ct Diamond Stud Earrings 1210864
26% off

9ct White Gold 0.50ct Diamond Stud Earrings

Fine Jewellery

$1,838.00 $1,354.00

Fine Jewellery Jewellery 9ct White Gold 0.30ct Diamond Stud Earrings 1210863

9ct White Gold 0.30ct Diamond Stud Earrings

Fine Jewellery

$919.00

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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.