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Marquise|Lab Grown|IGI

5.38ct G SI1 Marquise Lab Grown Diamond

ID • G/SI1 • IGI LG647480951

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG647480951

Diamond specifications and retailer prices

From £496 GBP
$665 USD
As of November 2, 2026
Save £2,600 GBP (84%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £3,097 GBP at Adiamor · As of November 2, 2026
View at Adiamor

About this 5.38ct lab-grown marquise diamond

This 5.38ct lab-grown marquise sits in the over five carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG647480951 or 647480951. Listed at 13 retailers as of November 2, 2026, with prices from £496 to £3,097, a £2,600 spread on the same certified stone. Adiamor lists it at £3,097. 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

5.38
Carat
G
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.2°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG647480951
Dimensions18.20 × 9.29 × 5.77 mm
L/W Ratio1.96
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
18.20 mm9.29 mm5.38 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG647480951
Side View
Table 60.0%Crown 35.2°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.1%

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: £3,097 GBP|Low: £496 GBP|High: £4,232 GBP|Avg: £1,683 GBP
Adiamor
Retailer 2
Retailer 3
Retailer 4
Retailer 5
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Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
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Retailer 17
November 2, 2026
Retailer 13£496 GBP
Retailer 6£540 GBP
Retailer 14£575 GBP
Retailer 2£654 GBP
Retailer 17£678 GBP
Retailer 15£709 GBP
Retailer 16£881 GBP
Retailer 10£920 GBP
Retailer 4£938 GBP
Retailer 7£1,075 GBP
Retailer 12£1,470 GBP
Retailer 3£1,618 GBP
Retailer 11£2,424 GBP
Adiamor£3,097 GBP
Retailer 5£3,135 GBP
Retailer 9£3,948 GBP
Retailer 8£4,232 GBP

6 data points across 17 retailers

13 retailers£496 GBP to £3,097 GBP

A
Cheapest Retailer
-
£496 GBP
$665 USD
A
Retailer 2
-
£540 GBP
$723 USD
View
A
Retailer 3
-
£575 GBP
$771 USD
View
A
Retailer 4
-
£654 GBP
View
A
Retailer 5
-
£678 GBP
HK$7,100 HKD
View
A
Retailer 6
-
£709 GBP
$950 USD
View
A
Retailer 7
-
£881 GBP
$1,181 USD
View
A
Retailer 8
-
£920 GBP
View
B+
Retailer 9
-
£938 GBP
$1,257 USD
View
B+
Retailer 10
-
£1,470 GBP
$1,969 USD
View
B
Retailer 11
-
£1,618 GBP
$2,168 USD
View
B
Retailer 12
-
£2,424 GBP
View
Most Expensive
B
Adiamor
D-82832620 · Nov 2
£3,097 GBP
$4,149 USD
View
12 more retailers have this diamond
Prices start from £496 GBPSave up to £2,600 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
5.38ct Marquise
£496 GBP