Marquise|Lab Grown|IGI

0.41ct G SI1 Marquise Lab Grown Diamond

ID • G/SI1 • IGI LG544242197

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG544242197

Diamond specifications and retailer prices

From £78 GBP
$105 USD
As of November 2, 2026
Save £278 GBP (78%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £818 GBP at MOH London · As of October 21, 2026
View at MOH London

About this 0.41ct lab-grown marquise diamond

This 0.41ct lab-grown marquise sits in the sub-half-carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG544242197 or 544242197. Listed at 13 retailers as of October 31, 2026, with a 356% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

0.41
Carat
G
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle32.7°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG544242197
Dimensions7.85 × 3.93 × 2.37 mm
L/W Ratio2.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
7.85 mm3.93 mm0.41 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG544242197
Side View
Table 57.0%Crown 32.7°Girdle: THN-STKPavilion 40.2°Culet: NoneDepth 60.3%

Caratlytics Score

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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 2
Current: £818 GBP|Low: £75 GBP|High: £823 GBP|Avg: £247 GBP|-0.6%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 7£78 GBP
Retailer 11£91 GBP
Retailer 8£104 GBP
Retailer 12£104 GBP
Retailer 5£171 GBP
Retailer 2£192 GBP
Retailer 10£195 GBP
Retailer 6£235 GBP
Retailer 3£266 GBP
Retailer 9£313 GBP
Retailer 4£357 GBP
MOH London£818 GBP

42 data points across 12 retailers

13 retailers£78 GBP to £357 GBP

A
Cheapest Retailer
-
£78 GBP
$105 USD
A
Retailer 2
-
£91 GBP
$122 USD
View
Retailer 3
-
£104 GBP
$139 USD
View
Price last confirmed 9 days ago
A
Retailer 4
-
£104 GBP
$139 USD
View
B+
Retailer 5
-
£171 GBP
$230 USD
View
B+
Retailer 6
-
£192 GBP
View
B+
Retailer 7
-
£195 GBP
$262 USD
View
B+
Retailer 8
-
£229 GBP
HK$2,400 HKD
View
B+
Retailer 9
-
£235 GBP
View
B
Retailer 10
-
£266 GBP
$357 USD
View
B
Retailer 11
-
£313 GBP
$420 USD
View
B
Retailer 12
-
£357 GBP
$478 USD
View
Most Expensive
MOH London
LG544242197 · Oct 21
£818 GBP
View
Price under review
12 more retailers have this diamond
Prices start from £78 GBPSave up to £278 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
0.41ct Marquise
£78 GBP