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Marquise|Lab Grown|IGI

0.54ct H SI1 Marquise Lab Grown Diamond

VG • H/SI1 • IGI LG414059519

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG414059519

Diamond specifications and retailer prices

From £240 GBP
$321 USD
As of October 30, 2026
Save £953 GBP (80%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £1,192 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 H colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG414059519 or 414059519. Listed at 12 retailers as of October 30, 2026, with prices from £240 to £1,192, a £953 spread on the same certified stone. MOH London lists it at £1,192. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.54
Carat
H
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishGood
SymmetryGood
FluorescenceNone
Crown angle35.5°
Pavilion angle39.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG414059519
Dimensions8.46 × 4.40 × 2.59 mm
L/W Ratio1.92
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory grown diamond was created by chemical vapor deposition process (CVD) Type IIa
Top View
8.46 mm4.40 mm0.54 ctH / SI1
OriginLab Grown
CutVery Good
PolishGood
SymmetryGood
FluorescenceNone
CertificateIGI LG414059519
Side View
Table 60.5%Crown 35.5°Girdle: THN-STKPavilion 39.5°Culet: NoneDepth 58.9%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: £1,192 GBP|Low: £231 GBP|High: £1,207 GBP|Avg: £577 GBP|-1.0%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
November 1, 2026
Retailer 11£240 GBP
Retailer 2£269 GBP
Retailer 3£269 GBP
Retailer 8£271 GBP
Retailer 15£278 GBP
Retailer 12£298 GBP
Retailer 16£298 GBP
Retailer 5£414 GBP
Retailer 14£482 GBP
Retailer 9£540 GBP
Retailer 6£575 GBP
Retailer 10£872 GBP
Retailer 13£956 GBP
Retailer 4£1,105 GBP
MOH London£1,192 GBP
Retailer 7£1,195 GBP

24 data points across 16 retailers

12 retailers£240 GBP to £1,192 GBP

B+
Cheapest Retailer
-
£240 GBP
$321 USD
B+
Retailer 2
-
£269 GBP
$360 USD
View
Final sale: no returns
B+
Retailer 3
-
£269 GBP
$360 USD
View
B+
Retailer 4
-
£278 GBP
$373 USD
View
Retailer 5
-
£298 GBP
$399 USD
View
Price last confirmed 7 days ago
B
Retailer 6
-
£298 GBP
$399 USD
View
B
Retailer 7
-
£482 GBP
$646 USD
View
Retailer 8
-
£540 GBP
€689 EUR
View
Price last confirmed 7 days ago
C
Retailer 9
-
£872 GBP
$1,169 USD
View
C
Retailer 10
-
£956 GBP
$1,281 USD
View
C
Retailer 11
-
£1,105 GBP
$1,481 USD
View
Most Expensive
C
MOH London
LG414059519 · Nov 1
£1,192 GBP
View
11 more retailers have this diamond
Prices start from £240 GBPSave up to £953 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.

B+
0.54ct Marquise
£240 GBP