Marquise|Lab Grown|IGI

3.99ct G VVS2 Marquise Lab Grown Diamond

ID • G/VVS2 • IGI LG818694805

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG818694805

Diamond specifications and retailer prices

From £363 GBP

$486 USD

As of November 2, 2026

Save £1,514 GBP (81%) vs most expensive(unlock to see where)

16 retailers carry this diamond

Most expensive: £1,877 GBP at MOH London · As of November 1, 2026

View at MOH London

About this 3.99ct lab-grown marquise diamond

This 3.99ct lab-grown marquise sits in the three to five carat band, graded G colour (near-colourless) and VVS2 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG818694805 or 818694805. Listed at 16 retailers as of November 1, 2026, with prices from £363 to £1,877, a £1,514 spread on the same certified stone. MOH London lists it at £1,877. 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

3.99

Carat

Colour

VVS2

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle36.3°

Pavilion angle42.7°

OriginLab Grown

Grading LabIGI

CertificateIGI LG818694805

Dimensions15.55 × 8.29 × 5.35 mm

L/W Ratio1.88

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 LG818694805

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: Nov 2

Current: £1,877 GBP|Low: £335 GBP|High: £1,877 GBP|Avg: £947 GBP|+16.5%

MOH London

Retailer 2

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Retailer 9

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Retailer 11

Retailer 12

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Retailer 16

November 2, 2026

Retailer 9£363 GBP

Retailer 12£406 GBP

Retailer 16£449 GBP

Retailer 5£537 GBP

Retailer 8£682 GBP

Retailer 15£701 GBP

Retailer 6£719 GBP

Retailer 11£747 GBP

Retailer 4£914 GBP

Retailer 2£976 GBP

Retailer 7£1,164 GBP

Retailer 3£1,182 GBP

Retailer 10£1,218 GBP

Retailer 14£1,466 GBP

Retailer 13£1,682 GBP

MOH London£1,877 GBP

45 data points across 16 retailers

16 retailers£363 GBP to £1,877 GBP

Cheapest Retailer

£363 GBP

$486 USD

Retailer 2

£406 GBP

$544 USD

View

Retailer 3

£449 GBP

$602 USD

View

Retailer 4

£537 GBP

$720 USD

View

Retailer 5

£682 GBP

$914 USD

View

B+

Retailer 6

£701 GBP

$939 USD

View

Retailer 7

£719 GBP

€917 EUR

View

Price last confirmed 8 days ago

Retailer 8

£747 GBP

View

Retailer 9

£914 GBP

A$1,884 AUD

View

Retailer 10

£976 GBP

ZAR 21,124 ZAR

View

B+

Retailer 11

£1,164 GBP

$1,559 USD

View

B+

Retailer 12

£1,182 GBP

$1,584 USD

View

B+

Retailer 13

£1,218 GBP

$1,632 USD

View

B+

Retailer 14

£1,466 GBP

$1,964 USD

View

Retailer 15

£1,682 GBP

$2,254 USD

View

Most Expensive

MOH London

LG818694805 · Nov 1

£1,877 GBP

View

15 more retailers have this diamond

Prices start from £363 GBPSave up to £1,514 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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3.99ct Marquise

£363 GBP