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Marquise|Lab Grown|IGI

2.99ct D SI1 Marquise Lab Grown Diamond

EX • D/SI1 • IGI LG757531851

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG757531851

Diamond specifications and retailer prices

From £510 GBP
As of November 6, 2026
Save £725 GBP (59%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £1,235 GBP at MOH London · As of November 5, 2026
View at MOH London

About this 2.99ct lab-grown marquise diamond

This 2.99ct lab-grown marquise sits in the two to three carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG757531851 or 757531851. Listed at 4 retailers as of November 5, 2026, with prices from £510 to £1,235, a £725 spread on the same certified stone. MOH London lists it at £1,235. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

2.99
Carat
D
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37°
Pavilion angle41.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG757531851
Dimensions13.82 × 7.52 × 4.86 mm
L/W Ratio1.84
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
13.82 mm7.52 mm2.99 ctD / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG757531851
Side View
Table 64.0%Crown 37°Girdle: STK-VTKPavilion 41.5°Culet: NoneDepth 64.6%

Caratlytics Score

How it works →
A
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: Nov 6
Current: £1,235 GBP|Low: £487 GBP|High: £1,354 GBP|Avg: £852 GBP
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 8£487 GBP
Retailer 3£510 GBP
Retailer 2£563 GBP
Retailer 4£586 GBP
Retailer 5£964 GBP
MOH London£1,235 GBP
Retailer 7£1,245 GBP
Retailer 6£1,354 GBP

3 data points across 8 retailers

4 retailers£510 GBP to £1,235 GBP

B+
Cheapest Retailer
-
£510 GBP
A
Retailer 2
-
£563 GBP
View
B+
Retailer 3
-
£964 GBP
View
Most Expensive
B
MOH London
LG757531851 · Nov 5
£1,235 GBP
View
3 more retailers have this diamond
Prices start from £510 GBPSave up to £725 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
2.99ct Marquise
£510 GBP