Round|Lab Grown|IGI

3.55ct H VS1 Round Lab Grown Diamond

ID • H/VS1 • IGI LG804641065

Shape and cutting style on the report: Round brilliant

Certificate IGI LG804641065

Diamond specifications and retailer prices

From £324 GBP

$434 USD

As of October 29, 2026

Save £1,915 GBP (86%) vs most expensive(unlock to see where)

15 retailers carry this diamond

Most expensive: £2,239 GBP at Brilliant Earth · As of October 29, 2026

View at Brilliant Earth

About this 3.55ct lab-grown round diamond

This 3.55ct lab-grown round sits in the three to five carat band, graded H colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG804641065 or 804641065. Listed at 15 retailers as of October 29, 2026, with prices from £324 to £2,239, a £1,915 spread on the same certified stone. Brilliant Earth lists it at £2,239. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

3.55

Carat

Colour

VS1

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle35.1°

Pavilion angle40.2°

OriginLab Grown

Grading LabIGI

CertificateIGI LG804641065

Dimensions9.83 × 9.79 × 5.96 mm

L/W Ratio1.00

Girdle conditionFaceted

Cert comments

This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa

View IGI Report →View Loupe360 Video →

Top View

OriginLab Grown

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateIGI LG804641065

Side View

Caratlytics Score

How it works →

Excellent

Excellent quality and great value

Unlock full score analysis

See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29

Current: £2,239 GBP|Low: £311 GBP|High: £2,299 GBP|Avg: £898 GBP|-2.6%

Brilliant Earth

Retailer 2

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Retailer 5

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Retailer 7

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Retailer 15

October 29, 2026

Retailer 12£324 GBP

Retailer 3£402 GBP

Retailer 13£402 GBP

Retailer 7£449 GBP

Retailer 14£631 GBP

Retailer 10£634 GBP

Retailer 4£697 GBP

Retailer 6£794 GBP

Retailer 2£848 GBP

Retailer 9£872 GBP

Retailer 11£1,127 GBP

Retailer 15£1,292 GBP

Retailer 5£1,315 GBP

Retailer 8£1,483 GBP

Brilliant Earth£2,239 GBP

29 data points across 15 retailers

15 retailers£324 GBP to £2,239 GBP

Cheapest Retailer

£324 GBP

$434 USD

Retailer 2

£402 GBP

$538 USD

View

Retailer 3

£402 GBP

$538 USD

View

B+

Retailer 4

£631 GBP

$846 USD

View

Retailer 5

£634 GBP

$850 USD

View

Retailer 6

£697 GBP

$934 USD

View

Retailer 7

£794 GBP

$1,064 USD

View

Retailer 8

£848 GBP

A$1,749 AUD

View

Retailer 9

£872 GBP

ZAR 18,878 ZAR

View

B+

Retailer 10

£1,127 GBP

$1,510 USD

View

Retailer 11

£1,292 GBP

$1,731 USD

View

Price last confirmed 40 days ago

B+

Retailer 12

£1,292 GBP

$1,731 USD

View

B+

Retailer 13

£1,315 GBP

$1,762 USD

View

B+

Retailer 14

£1,483 GBP

View

Most Expensive

Brilliant Earth

21393620A · Oct 29

£2,239 GBP

$3,000 USD

View

14 more retailers have this diamond

Prices start from £324 GBPSave up to £1,915 GBP

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

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3.55ct Round

£324 GBP