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Create Your Perfect Ring

1.

Setting

Sia - £1,440

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Sia
2.

Diamond

Choose
3.

Ring Size

Select

Sia - Cushion Diamond Band in 18k White Gold

Setting
£1,440

Diamond
Choose

Total
£1,440

Diamond Shape: Cushion

Metal: 18k White Gold

Ring Size: Select Size

Book Appointment

Order today and receive your custom made piece by 1 Aug 2026

  • Free UK Delivery
  • Lifetime Warranty
  • Free Resizing
  • Ethical Sourcing
  • Handcrafted in the UK
  • Insurance Valuation

Daring yet elegant, the Sia engagement ring is a unique play on the vibrant style of diamond band rings. Made in 18k white gold and lined with diamonds along its outer edges, the ring has a contemporary feel and delivers intense scintillation and sparkle that mirrors the beauty of the round diamond center stone. This intriguing ring is set with 0.25ct of diamond melee.

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Select a Diamond

Choose the Cushion cut diamond for your Diamond Band Engagement Ring or Change Shape

CVD 0.65 Diamond

0.65ct Cushion

£644

labs-cert-igi
Carat
0.65
Colour
D
Clarity
VS1
More Info
CVD 1.43 Diamond

1.43ct Cushion

£922

labs-cert-igi
Carat
1.43
Colour
E
Clarity
VS1
More Info
CVD 1.37 Diamond

1.37ct Cushion

£945

labs-cert-igi
Carat
1.37
Colour
D
Clarity
VVS2
More Info
CVD 1.36 Diamond

1.36ct Cushion

£960

labs-cert-igi
Carat
1.36
Colour
E
Clarity
VS1
More Info
HPHT 1.49 Diamond

1.49ct Cushion

£983

labs-cert-igi
Carat
1.49
Colour
D
Clarity
VS1
More Info
CVD 1.02 Diamond

1.02ct Cushion

£1,002

labs-cert-igi
Carat
1.02
Colour
D
Clarity
VS2
More Info
HPHT 1.02 Diamond

1.02ct Cushion

£1,037

labs-cert-igi
Carat
1.02
Colour
D
Clarity
VS2
More Info
CVD 1.5 Diamond

1.50ct Cushion

£1,054

labs-cert-igi
Carat
1.50
Colour
E
Clarity
VVS2
More Info
HPHT 1.07 Diamond

1.07ct Cushion

£1,081

labs-cert-igi
Carat
1.07
Colour
E
Clarity
VVS2
More Info
HPHT 1.01 Diamond

1.01ct Cushion

£1,097

labs-cert-igi
Carat
1.01
Colour
D
Clarity
VVS2
More Info
HPHT 1 Diamond

1.00ct Cushion

£1,101

labs-cert-igi
Carat
1.00
Colour
D
Clarity
VVS2
More Info
HPHT 1.01 Diamond

1.01ct Cushion

£1,166

labs-cert-igi
Carat
1.01
Colour
D
Clarity
VS1
More Info
HPHT 1.09 Diamond

1.09ct Cushion

£1,174

labs-cert-igi
Carat
1.09
Colour
D
Clarity
VS2
More Info
HPHT 1.09 Diamond

1.09ct Cushion

£1,174

labs-cert-igi
Carat
1.09
Colour
E
Clarity
VS2
More Info
HPHT 1.1 Diamond

1.10ct Cushion

£1,184

labs-cert-igi
Carat
1.10
Colour
D
Clarity
VVS2
More Info
HPHT 1.03 Diamond

1.03ct Cushion

£1,187

labs-cert-igi
Carat
1.03
Colour
D
Clarity
VS1
More Info
HPHT 1.03 Diamond

1.03ct Cushion

£1,187

labs-cert-igi
Carat
1.03
Colour
D
Clarity
VS1
More Info
CVD 1 Diamond

1.00ct Cushion

£1,212

labs-cert-igi
Carat
1.00
Colour
E
Clarity
VS1
More Info
HPHT 1.07 Diamond

1.07ct Cushion

£1,229

labs-cert-igi
Carat
1.07
Colour
D
Clarity
VS1
More Info
HPHT 1.1 Diamond

1.10ct Cushion

£1,259

labs-cert-igi
Carat
1.10
Colour
E
Clarity
VS1
More Info

Buy With Confidence

We’re committed to quality, care, and your happiness throughout your journey with us.

  • Free UK Delivery
  • Lifetime Warranty
  • Free Resizing
  • Ethical Sourcing
  • Handcrafted in the UK
  • Insurance Valuation