design your dream ring

Create a custom ring that's uniquely yours. Choose your setting, metal and lab-grown diamond to bring your vision to life - all in a few simple steps.

Review Your Ring

  • 1
    Design Your Ring
  • 2
    Select Your Lab Diamond
  • 3
    Review Your Ring
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Ring Size Guide

Use this guide to find your perfect ring size. All measurements are approximate.

How to Measure

Ring Diameter: If you have a ring that fits well, measure the inside diameter of the ring in millimeters using a ruler. Place the ruler across the center of the ring and measure from one inside edge to the other. Compare this measurement to the Ring Diameter column in the chart below.

Finger Circumference: Wrap a piece of string or paper around the base of your finger where you plan to wear the ring. Mark where the string or paper overlaps and measure the length in millimeters using a ruler. Compare this measurement to the Finger Circumference column in the chart below. For the most accurate measurement, measure at the end of the day when your fingers are warmest.
AU/UK Size US Size Ring Diameter (mm) Finger Circumference (mm)
H 4 14.9 46.8
15.1 47.4
I 15.3 48.0
15.4 48.7
J 5 15.6 49.3
15.8 49.9
K 16.0 50.6
16.2 51.2
L 6 16.3 51.9
16.5 52.5
M 16.7 53.1
16.9 53.8
N 7 17.0 54.4
17.2 55.0
O 17.4 55.7
17.6 56.3
P 8 17.7 56.9
17.9 57.6
Q 18.1 58.2
18.3 58.9
R 9 18.5 59.5
18.6 60.2
S 18.8 60.8
19.0 61.4
T 10 19.2 62.1
10¼ 19.4 62.7
U 10½ 19.6 63.4
10¾ 19.7 64.0
V 11 19.9 64.6
11¼ 20.1 65.3
W 11½ 20.3 65.9
11¾ 20.5 66.6
X 12 20.6 67.2
12¼ 20.8 67.8
Y 12½ 21.0 68.5
12¾ 21.2 69.1
Z 13 21.4 69.7

Frequently Asked Questions

The Ring Design Studio Process

How does the Ring Design Studio process work?

Our Ring Design Studio experience lets you create a ring that's uniquely yours. Simply choose your preferred ring style, setting, lab-grown diamond cut, metal type and ring size.

Once your selections are finalised and your order is placed, your ring is custom made to your exact specifications, crafted especially for you. Please review all details carefully before checkout, as custom rings are made to order and cannot be changed once production begins.

How long does it take to make my ring?

Your custom ring will be ready to ship in 3-4 weeks from the date your order is completed and payment is made.

Can I change my diamond or ring details after ordering?

Changes are not possible once the order has been placed because your ring is custom made to your selected specifications. Please ensure all details including ring style, setting, lab-grown diamond detail, metal type, and ring size are correct before completing your purchase.

Diamonds & Certification

What diamonds are used?

We use lab-grown diamonds in all our designs with each centre lab diamond individually certified.

Are the diamonds certified?

Yes. All centre lab-grown diamonds offered through our Ring Design Studio service are independently certified.

Please note that the halo, accent and side diamonds are not individually certified.

Why are there so many diamonds to choose from?

Each diamond is individually unique and comes with its own certification. When you select your diamond, it is reserved exclusively for your design allowing you to choose the perfect balance of carat weight, colour, clarity, and price for a ring that's truly yours!

Returns & Warranty

Can I return or exchange a Ring Design Studio purchase?

Ring Design Studio pieces are custom made; thus change-of-mind returns or exchanges do not apply. However, your purchase is still covered by consumer guarantees relating to manufacturing faults.

Is my custom ring covered by warranty?

Yes. Your ring is covered by our warranty against manufacturing faults. We recommend regular professional inspections to ensure stones remain secure and your ring stays in excellent condition.

Metal Types & Customisation

What metal options are available?

We offer a range of precious metals including 9ct, 14ct and 18ct gold in yellow, white and rose, as well as platinum, depending on the design selected. For more information on caring for your ring, please refer to our Jewellery Care page.

Do you offer a matching wedding band?

Yes! You can easily add a matching wedding band during the design process by switching the toggle to 'yes' during the design process. This allows you to view the bands image and pricing and to see exactly how it complements your engagement ring. We recommend purchasing both at the same time to ensure a seamless fit.

Product Details

Will my ring look exactly like the images online?

Images shown are representations of the design. While your ring will match the selected specifications, minor variations can occur due to the custom manufacturing process.