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0.54ct J SI1 Round Lab Grown Diamond

EX • J/SI1 • IGI LG407915209

Shape and cutting style on the report: Round brilliant

Certificate IGI LG407915209

Diamond specifications and retailer prices

From £179 GBP
$240 USD
As of October 29, 2026
Save £716 GBP (80%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £895 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 0.54ct lab-grown round diamond

This 0.54ct lab-grown round sits in the half to three-quarter carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG407915209 or 407915209. Listed at 11 retailers as of October 29, 2026, with prices from £179 to £895, a £716 spread on the same certified stone. MOH London lists it at £895. 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
J
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle31.6°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG407915209
Dimensions5.38 × 5.33 × 3.14 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory grown diamond was created by chemical vapor deposition process (CVD) Type IIa
Top View
5.38 mm5.33 mm0.54 ctJ / SI1
OriginLab Grown
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG407915209
Side View
Table 57.5%Crown 31.6°Girdle: MediumPavilion 40.3°Culet: NoneDepth 58.6%

Caratlytics Score

How it works →
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: Oct 29
Current: £895 GBP|Low: £172 GBP|High: £900 GBP|Avg: £401 GBP|+0.5%
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
October 30, 2026
Retailer 8£179 GBP
Retailer 12£201 GBP
Retailer 3£207 GBP
Retailer 9£222 GBP
Retailer 11£222 GBP
Retailer 2£254 GBP
Retailer 10£375 GBP
Retailer 5£377 GBP
Retailer 6£426 GBP
Retailer 4£445 GBP
Retailer 13£714 GBP
Retailer 7£716 GBP
MOH London£895 GBP

21 data points across 13 retailers

11 retailers£179 GBP to £895 GBP

A
Cheapest Retailer
-
£179 GBP
$240 USD
B+
Retailer 2
-
£201 GBP
$269 USD
View
Final sale: no returns
B+
Retailer 3
-
£207 GBP
$278 USD
View
B+
Retailer 4
-
£222 GBP
$298 USD
View
B+
Retailer 5
-
£222 GBP
$298 USD
View
A
Retailer 6
-
£254 GBP
$340 USD
View
B+
Retailer 7
-
£375 GBP
$502 USD
View
B+
Retailer 8
-
£426 GBP
€543 EUR
View
B
Retailer 9
-
£714 GBP
$957 USD
View
B
Retailer 10
-
£716 GBP
$960 USD
View
Most Expensive
B
MOH London
LG407915209 · Oct 29
£895 GBP
View
10 more retailers have this diamond
Prices start from £179 GBPSave up to £716 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 Round
£179 GBP