Round lab-grown diamond reference illustration

Shape & selection guide

Round lab-grown diamonds.

Choose a round brilliant when an even, circular outline and a lively pattern of light are your priorities. Weight alone does not describe its visible size: compare the report diameter, depth and moving imagery before choosing a larger carat number.

Compare sizes & budgets See the shape on a hand

A considered choice.

Reference illustrations show the silhouette, not a currently available stone.

1.00 ct · D–F · VS1–VS2

Round diamond

Approx. 6.40 × 6.40 mm

Estimated EU budget

From €470

VAT & delivery allowances included

View diamond

1.50 ct · D–F · VS1–VS2

Round diamond

Approx. 7.30 × 7.30 mm

Estimated EU budget

From €510

VAT & delivery allowances included

View diamond

2.00 ct · D–F · VS1–VS2

Round diamond

Approx. 8.10 × 8.10 mm

Estimated EU budget

From €670

VAT & delivery allowances included

View diamond

3.00 ct · D–F · VS1–VS2

Round diamond

Approx. 9.20 × 9.20 mm

Estimated EU budget

From €1,020

VAT & delivery allowances included

View diamond

Round diamond prices and face-up size

Compare the same D colour and VS1 clarity preference across weights. Different grades, individual dimensions and visual performance may change the final quote. A report number, material disclosure and imagery of the actual stone are agreed before ordering.

D / VS1 loose lab-grown diamond planning budgets · EUR
Carat	Approx. length × width	Guide budget
1.00 ct	6.40 × 6.40 mm	€610
1.50 ct	7.30 × 7.30 mm	€610
2.00 ct	8.10 × 8.10 mm	€790
3.00 ct	9.20 × 9.20 mm	€1,390

Reviewed 2026-10-04; numeric guides available until 2026-11-03. Includes delivery, import / clearance and VAT planning allowances, not a fixed tax-inclusive offer or live stock. Jewellery manufacture is excluded. Dimensions are visualiser estimates, not measurements of an available stone. Read the full pricing assumptions.

What to check in a round diamond

Review any cut assessment in the context of the issuing laboratory and report type; a polish grade is not a substitute for overall cut performance.
Compare face-up brightness in neutral lighting, not only a spotlight video.
For earrings or matched stones, agree matching diameters and appearance as well as weight.

Plan the setting around the stone

A solitaire keeps the outline clear; a halo or multiple-stone design changes the overall footprint. Ask your setter to confirm the actual diameter and mounting height.

Verify the selected stone’s report and confirm growth origin and any treatment disclosure. Reference images, grades and estimated dimensions on this page do not certify a specific diamond.

For a deeper explanation: Cut, polish and symmetry: three different questions about light..

Educational reference: GIA’s diamond-shape guide. Our notes are selection guidance, not a laboratory cut grade.

See the size.
Find your proportion.

Explore nine shapes, from 0.30 to 5.00 carats. Compare their face-up proportions on a reference hand.

Carat weight: 1.00 ct
Approx. diameter: 6.40 mm

Carat weight

Diamond shape

Skin tone

Illustrative proportions, not a true-to-life screen scale. Actual measurements and appearance vary; your final selection is assessed using its laboratory report and imagery. Fancy shapes scale from typical one-carat dimensions.

Explore this shape