Marquise|Lab Grown|IGI

3.51ct F VS2 Marquise Lab Grown Diamond

EX • F/VS2 • IGI LG843641551

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG843641551

Diamond specifications and retailer prices

From £400 GBP

$536 USD

As of October 29, 2026

Save £2,115 GBP (84%) vs most expensive(unlock to see where)

14 retailers carry this diamond

Most expensive: £2,515 GBP at Brilliant Earth · As of October 31, 2026

View at Brilliant Earth

About this 3.51ct lab-grown marquise diamond

This 3.51ct lab-grown marquise sits in the three to five carat band, graded F colour (colourless) and VS2 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG843641551 or 843641551. Listed at 14 retailers as of October 29, 2026, with prices from £400 to £2,515, a £2,115 spread on the same certified stone. Brilliant Earth lists it at £2,515. 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

3.51

Carat

Colour

VS2

Clarity

Excellent

Cut

Specifications

CutExcellent

PolishVery Good

SymmetryVery Good

FluorescenceNone

Crown angle35.3°

Pavilion angle39.3°

OriginLab Grown

Grading LabIGI

CertificateIGI LG843641551

Dimensions15.66 × 7.75 × 4.87 mm

L/W Ratio2.02

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

CutExcellent

PolishVery Good

SymmetryVery Good

FluorescenceNone

CertificateIGI LG843641551

Side View

Caratlytics Score

How it works →

Excellent

Excellent quality and great value

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

Price History

Last verified: Oct 29

Current: £2,515 GBP|Low: £400 GBP|High: £4,202 GBP|Avg: £1,319 GBP|-40.1%

Brilliant Earth

Retailer 2

Retailer 3

Retailer 4

Retailer 5

Retailer 6

Retailer 7

Retailer 8

Retailer 9

Retailer 10

Retailer 11

Retailer 12

Retailer 13

Retailer 14

October 31, 2026

Retailer 3£400 GBP

Retailer 9£532 GBP

Retailer 8£549 GBP

Retailer 6£593 GBP

Retailer 11£662 GBP

Retailer 10£731 GBP

Retailer 7£983 GBP

Retailer 2£1,002 GBP

Retailer 4£1,446 GBP

Retailer 14£1,527 GBP

Retailer 13£1,555 GBP

Retailer 12£1,630 GBP

Retailer 5£2,019 GBP

Brilliant Earth£2,515 GBP

12 data points across 14 retailers

14 retailers£400 GBP to £2,515 GBP

Cheapest Retailer

£400 GBP

$536 USD

Final sale: no returns

Retailer 2

£532 GBP

View

Retailer 3

£549 GBP

$735 USD

View

Price last confirmed 5 days ago

B+

Retailer 4

£593 GBP

$795 USD

View

Retailer 5

£662 GBP

€845 EUR

View

Retailer 6

£731 GBP

View

Retailer 7

£983 GBP

$1,317 USD

View

Retailer 8

£1,002 GBP

$1,343 USD

View

B+

Retailer 9

£1,446 GBP

$1,938 USD

View

B+

Retailer 10

£1,527 GBP

$2,046 USD

View

Retailer 11

£1,555 GBP

$2,084 USD

View

Price last confirmed 8 days ago

Retailer 12

£1,630 GBP

View

Price last confirmed 7 days ago

Retailer 13

£2,019 GBP

$2,705 USD

View

Most Expensive

Brilliant Earth

22183942A · Oct 31

£2,515 GBP

$3,370 USD

View

13 more retailers have this diamond

Prices start from £400 GBPSave up to £2,115 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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