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Round|Lab Grown|IGI

1.38ct H VS1 Round Lab Grown Diamond

ID • H/VS1 • IGI LG589388483

Shape and cutting style on the report: Round brilliant

Certificate IGI LG589388483

Diamond specifications and retailer prices

From £128 GBP
$172 USD
As of October 26, 2026
Save £619 GBP (83%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £747 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 1.38ct lab-grown round diamond

This 1.38ct 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 LG589388483 or 589388483. Listed at 20 retailers as of October 26, 2026, with prices from £128 to £747, a £619 spread on the same certified stone. MOH London lists it at £747. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.38
Carat
H
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.9°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG589388483
Dimensions7.18 × 7.13 × 4.36 mm
L/W Ratio1.01
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
7.18 mm7.13 mm1.38 ctH / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG589388483
Side View
Table 59.0%Crown 33.9°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 60.8%

Caratlytics Score

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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 26
Current: £747 GBP|Low: £128 GBP|High: £852 GBP|Avg: £339 GBP|-12.2%
MOH London
Retailer 2
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Retailer 18
November 1, 2026
Retailer 18£128 GBP
Retailer 8£143 GBP
Retailer 5£149 GBP
Retailer 3£159 GBP
Retailer 17£159 GBP
Retailer 6£215 GBP
Retailer 15£273 GBP
Retailer 11£284 GBP
Retailer 13£293 GBP
Retailer 7£349 GBP
Retailer 9£373 GBP
Retailer 16£389 GBP
Retailer 12£395 GBP
Retailer 2£414 GBP
Retailer 4£511 GBP
Retailer 14£522 GBP
Retailer 10£552 GBP
MOH London£747 GBP

39 data points across 18 retailers

20 retailers£128 GBP to £747 GBP

A
Cheapest Retailer
-
£128 GBP
$172 USD
A
Retailer 2
-
£143 GBP
$192 USD
View
Final sale: no returns
A
Retailer 3
-
£149 GBP
$199 USD
View
Retailer 4
-
£159 GBP
$213 USD
View
Price last confirmed 7 days ago
A
Retailer 5
-
£159 GBP
$213 USD
View
B+
Retailer 6
-
£215 GBP
$288 USD
View
A
Retailer 7
-
£273 GBP
ZAR 5,909 ZAR
View
A
Retailer 8
-
£284 GBP
€363 EUR
View
A
Retailer 9
-
£293 GBP
View
A
Retailer 10
-
£349 GBP
$468 USD
View
A
Retailer 11
-
£373 GBP
$500 USD
View
Retailer 12
-
£389 GBP
A$802 AUD
View
Price last confirmed 9 days ago
A
Retailer 13
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£395 GBP
$529 USD
View
B+
Retailer 14
-
£412 GBP
$552 USD
View
A
Retailer 15
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£414 GBP
$555 USD
View
B+
Retailer 16
-
£511 GBP
$685 USD
View
A
Retailer 17
-
£515 GBP
$690 USD
View
A
Retailer 18
-
£522 GBP
$700 USD
View
B+
Retailer 19
-
£552 GBP
$739 USD
View
Most Expensive
B+
MOH London
LG589388483 · Oct 29
£747 GBP
View
19 more retailers have this diamond
Prices start from £128 GBPSave up to £619 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
1.38ct Round
£128 GBP