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Round|Lab Grown|IGI

0.45ct G SI1 Round Lab Grown Diamond

EX • G/SI1 • IGI LG455034330

Shape and cutting style on the report: Round brilliant

Certificate IGI LG455034330

Diamond specifications and retailer prices

From £183 GBP
$245 USD
As of October 29, 2026
Save £729 GBP (80%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £912 GBP at MOH London · As of October 26, 2026
View at MOH London

About this 0.45ct lab-grown round diamond

This 0.45ct lab-grown round sits in the sub-half-carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG455034330 or 455034330. Listed at 10 retailers as of October 26, 2026, with prices from £183 to £912, a £729 spread on the same certified stone. MOH London lists it at £912. 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

0.45
Carat
G
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
Crown angle36.2°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG455034330
Dimensions4.90 × 4.94 × 3.00 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
Blue Nuance
Top View
4.90 mm4.94 mm0.45 ctG / SI1
OriginLab Grown
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateIGI LG455034330
Side View
Table 59.0%Crown 36.2°Girdle: THN-MEDPavilion 40.4°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: £912 GBP|Low: £176 GBP|High: £921 GBP|Avg: £368 GBP|+0.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 31, 2026
Retailer 5£183 GBP
Retailer 3£202 GBP
Retailer 8£213 GBP
Retailer 6£227 GBP
Retailer 9£325 GBP
Retailer 7£381 GBP
Retailer 2£430 GBP
Retailer 4£433 GBP
MOH London£912 GBP

41 data points across 9 retailers

10 retailers£183 GBP to £912 GBP

A
Cheapest Retailer
-
£183 GBP
$245 USD
A
Retailer 2
-
£202 GBP
$270 USD
View
A
Retailer 3
-
£213 GBP
$285 USD
View
B+
Retailer 4
-
£227 GBP
$304 USD
View
B+
Retailer 5
-
£227 GBP
$304 USD
View
B
Retailer 6
-
£381 GBP
$511 USD
View
B
Retailer 7
-
£430 GBP
View
B
Retailer 8
-
£433 GBP
€553 EUR
View
B
Retailer 9
-
£730 GBP
$978 USD
View
Most Expensive
B
MOH London
LG455034330 · Oct 26
£912 GBP
View
9 more retailers have this diamond
Prices start from £183 GBPSave up to £729 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
0.45ct Round
£183 GBP