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Round|Lab Grown|IGI

0.54ct I SI1 Round Lab Grown Diamond

EX • I/SI1 • IGI LG492123218

Shape and cutting style on the report: Round brilliant

Certificate IGI LG492123218

Diamond specifications and retailer prices

From £261 GBP
$350 USD
As of October 29, 2026
9 retailers carry this diamond
Most expensive: £1,084 GBP at MOH London · As of October 11, 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG492123218 or 492123218. Listed at 9 retailers as of October 29, 2026. 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle34.1°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG492123218
Dimensions5.24 × 5.26 × 3.20 mm
L/W Ratio1.00
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
5.24 mm5.26 mm0.54 ctI / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG492123218
Side View
Table 56.5%Crown 34.1°Girdle: MED-STKPavilion 40.3°Culet: NoneDepth 61.0%

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: £1,084 GBP|Low: £172 GBP|High: £1,084 GBP|Avg: £458 GBP|+1.2%
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 11, 2026
Retailer 2£216 GBP
Retailer 11£242 GBP
Retailer 13£250 GBP
Retailer 7£261 GBP
Retailer 8£267 GBP
Retailer 10£267 GBP
Retailer 3£384 GBP
Retailer 9£439 GBP
Retailer 6£491 GBP
Retailer 4£536 GBP
Retailer 5£750 GBP
Retailer 12£860 GBP
MOH London£1,084 GBP

14 data points across 13 retailers

9 retailers

Retailer 1
-
£216 GBP
$289 USD
Price last confirmed 21 days ago
Retailer 2
-
£250 GBP
$335 USD
View
Price last confirmed 25 days ago
A
Retailer 3
-
£261 GBP
$350 USD
View
Retailer 4
-
£267 GBP
$358 USD
View
Price last confirmed 23 days ago
Retailer 5
-
£267 GBP
$358 USD
View
Price last confirmed 29 days ago
Retailer 6
-
£439 GBP
$588 USD
View
Price last confirmed 20 days ago
Retailer 7
-
£750 GBP
$1,005 USD
View
Price last confirmed 18 days ago
Retailer 8
-
£860 GBP
$1,152 USD
View
Price last confirmed 31 days ago
Most Expensive
MOH London
LG492123218 · Oct 11
£1,084 GBP
View
Price last confirmed 20 days ago
8 more retailers have this diamond
Prices start from £261 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
£261 GBP