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Round|Lab Grown|IGI

1.45ct H VS1 Round Lab Grown Diamond

ID • H/VS1 • IGI LG649405823

Shape and cutting style on the report: Round brilliant

Certificate IGI LG649405823

Diamond specifications and retailer prices

From £300 GBP
$402 USD
As of October 30, 2026
Save £433 GBP (59%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £883 GBP at MOH London · As of October 19, 2026
View at MOH London

About this 1.45ct lab-grown round diamond

This 1.45ct lab-grown round sits in the one-and-a-quarter to one-and-a-half carat band, graded H colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG649405823 or 649405823. Listed at 7 retailers as of October 29, 2026, with a 144% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.45
Carat
H
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.3°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG649405823
Dimensions7.29 × 7.23 × 4.51 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.29 mm7.23 mm1.45 ctH / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG649405823
Side View
Table 56.0%Crown 35.3°Girdle: MED-STKPavilion 41.1°Culet: NoneDepth 62.1%

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: £883 GBP|Low: £281 GBP|High: £889 GBP|Avg: £488 GBP|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 19, 2026
Retailer 3£300 GBP
Retailer 5£321 GBP
Retailer 4£362 GBP
Retailer 7£369 GBP
Retailer 2£448 GBP
Retailer 6£733 GBP
MOH London£883 GBP

11 data points across 7 retailers

7 retailers£300 GBP to £733 GBP

B+
Cheapest Retailer
-
£300 GBP
$402 USD
A
Retailer 2
-
£321 GBP
$430 USD
View
A
Retailer 3
-
£362 GBP
$485 USD
View
A
Retailer 4
-
£448 GBP
$600 USD
View
Retailer 5
-
£462 GBP
$620 USD
View
Price last confirmed 76 days ago
B+
Retailer 6
-
£733 GBP
$982 USD
View
Most Expensive
MOH London
LG649405823 · Oct 19
£883 GBP
View
Price last confirmed 12 days ago
6 more retailers have this diamond
Prices start from £300 GBPSave up to £433 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
1.45ct Round
£300 GBP