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Marquise|Lab Grown|IGI

0.54ct I SI1 Marquise Lab Grown Diamond

ID • I/SI1 • IGI LG537241621

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG537241621

Diamond specifications and retailer prices

From £97 GBP
$130 USD
As of October 30, 2026
Save £908 GBP (90%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £1,005 GBP at MOH London · As of November 1, 2026
View at MOH London

About this 0.54ct lab-grown marquise diamond

This 0.54ct lab-grown marquise sits in the half to three-quarter carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG537241621 or 537241621. Listed at 11 retailers as of October 30, 2026, with prices from £97 to £1,005, a £908 spread on the same certified stone. MOH London lists it at £1,005. 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

0.54
Carat
I
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle37.7°
Pavilion angle39.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG537241621
Dimensions8.40 × 4.15 × 2.70 mm
L/W Ratio2.02
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
8.40 mm4.15 mm0.54 ctI / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG537241621
Side View
Table 58.0%Crown 37.7°Girdle: MED-STKPavilion 39.9°Culet: NoneDepth 65.1%

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: Oct 30
Current: £1,005 GBP|Low: £93 GBP|High: £1,016 GBP|Avg: £318 GBP
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 1, 2026
Retailer 6£97 GBP
Retailer 10£113 GBP
Retailer 7£120 GBP
Retailer 11£120 GBP
Retailer 2£216 GBP
Retailer 9£228 GBP
Retailer 3£239 GBP
Retailer 12£290 GBP
Retailer 8£387 GBP
Retailer 4£388 GBP
Retailer 5£408 GBP
MOH London£1,005 GBP

17 data points across 12 retailers

11 retailers£97 GBP to £1,005 GBP

A
Cheapest Retailer
-
£97 GBP
$130 USD
A
Retailer 2
-
£113 GBP
$151 USD
View
Retailer 3
-
£120 GBP
$161 USD
View
Price last confirmed 7 days ago
A
Retailer 4
-
£120 GBP
$161 USD
View
A
Retailer 5
-
£216 GBP
$290 USD
View
A
Retailer 6
-
£228 GBP
$306 USD
View
A
Retailer 7
-
£239 GBP
HK$2,500 HKD
View
B+
Retailer 8
-
£290 GBP
$389 USD
View
B+
Retailer 9
-
£387 GBP
$518 USD
View
B
Retailer 10
-
£408 GBP
$547 USD
View
Most Expensive
B
MOH London
LG537241621 · Nov 1
£1,005 GBP
View
10 more retailers have this diamond
Prices start from £97 GBPSave up to £908 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
0.54ct Marquise
£97 GBP