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Marquise|Lab Grown|IGI

3.99ct G VVS2 Marquise Lab Grown Diamond

EX • G/VVS2 • IGI LG840612569

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG840612569

Diamond specifications and retailer prices

From £435 GBP
$583 USD
As of November 1, 2026
Save £3,002 GBP (87%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £3,438 GBP at Frank Darling · As of November 1, 2026
View at Frank Darling

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 LG840612569 or 840612569. Listed at 5 retailers as of November 1, 2026, with prices from £435 to £3,438, a £3,002 spread on the same certified stone. Frank Darling lists it at £3,438. 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
G
Colour
VVS2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG840612569
Dimensions17.14 × 8.18 × 5.10 mm
L/W Ratio2.10
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
17.14 mm8.18 mm3.99 ctG / VVS2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG840612569
Side View
Table 64.0%Crown 36°Girdle: STK-THKPavilion 41.1°Culet: NoneDepth 62.3%

Caratlytics Score

How it works →
A
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 1
Current: £3,438 GBP|Low: £435 GBP|High: £3,438 GBP|Avg: £1,539 GBP|+0.0%
Frank Darling
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 29, 2026
Retailer 3£435 GBP
Retailer 4£608 GBP
Retailer 6£761 GBP
Retailer 2£1,581 GBP
Retailer 5£2,243 GBP
Frank Darling£3,438 GBP

8 data points across 6 retailers

5 retailers£435 GBP to £3,438 GBP

A
Cheapest Retailer
-
£435 GBP
$583 USD
Final sale: no returns
B+
Retailer 2
-
£608 GBP
$814 USD
View
B+
Retailer 3
-
£1,581 GBP
$2,118 USD
View
Retailer 4
-
£2,243 GBP
$3,005 USD
View
Price last confirmed 15 days ago
Most Expensive
B
Frank Darling
100757889406KD · Nov 1
£3,438 GBP
$4,606 USD
View
4 more retailers have this diamond
Prices start from £435 GBPSave up to £3,002 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.

A
3.99ct Marquise
£435 GBP