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Marquise|Lab Grown|IGI

3.93ct E SI1 Marquise Lab Grown Diamond

EX • E/SI1 • IGI LG848622380

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG848622380

Diamond specifications and retailer prices

From £774 GBP
As of November 1, 2026
Save £2,331 GBP (75%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: £3,105 GBP at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 3.93ct lab-grown marquise diamond

This 3.93ct lab-grown marquise sits in the three to five carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG848622380 or 848622380. Listed at 2 retailers as of October 31, 2026, with prices from £774 to £3,105, a £2,331 spread on the same certified stone. Brilliant Earth lists it at £3,105. 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

3.93
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.1°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG848622380
Dimensions16.11 × 8.27 × 5.28 mm
L/W Ratio1.95
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
16.11 mm8.27 mm3.93 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG848622380
Side View
Table 60.0%Crown 35.1°Girdle: MED-THKPavilion 41.2°Culet: NoneDepth 63.8%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 1
Current: £3,105 GBP|Low: £739 GBP|High: £3,105 GBP|Avg: £1,405 GBP
Brilliant Earth
Retailer 2
November 1, 2026
Retailer 2£774 GBP
Brilliant Earth£3,105 GBP

8 data points across 2 retailers

2 retailers£774 GBP to £3,105 GBP

A
Cheapest Retailer
-
£774 GBP
Most Expensive
B
Brilliant Earth
22259973A · Oct 31
£3,105 GBP
$4,160 USD
View
1 more retailer has this diamond
Prices start from £774 GBPSave up to £2,331 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
3.93ct Marquise
£774 GBP