CaratHunter
Plans
Cushion|Lab Grown|IGI

1.38ct G VS1 Cushion Lab Grown Diamond

EX • G/VS1 • IGI LG625480578

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG625480578

Diamond specifications and retailer prices

From £322 GBP
As of November 5, 2026
Save £594 GBP (65%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £916 GBP at MOH London · As of November 5, 2026
View at MOH London

About this 1.38ct lab-grown cushion diamond

This 1.38ct lab-grown cushion sits in the one-and-a-quarter to one-and-a-half carat band, graded G colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG625480578 or 625480578. Listed at 8 retailers as of November 5, 2026, with prices from £322 to £916, a £594 spread on the same certified stone. MOH London lists it at £916. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.38
Carat
G
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.8°
Pavilion angle38.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG625480578
Dimensions6.59 × 6.51 × 4.18 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
6.59 mm6.51 mm1.38 ctG / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG625480578
Side View
Table 60.0%Crown 34.8°Girdle: STK-THKPavilion 38.5°Culet: NoneDepth 64.2%

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: Nov 5
Current: £916 GBP|Low: £322 GBP|High: £929 GBP|Avg: £521 GBP|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 5, 2026
Retailer 7£322 GBP
Retailer 5£353 GBP
Retailer 6£392 GBP
Retailer 3£395 GBP
Retailer 2£432 GBP
Retailer 4£502 GBP
Retailer 8£863 GBP
MOH London£916 GBP

42 data points across 8 retailers

8 retailers£322 GBP to £916 GBP

A
Cheapest Retailer
-
£322 GBP
A
Retailer 2
-
£353 GBP
View
A
Retailer 3
-
£392 GBP
View
A
Retailer 4
-
£395 GBP
View
B+
Retailer 5
-
£432 GBP
View
B+
Retailer 6
-
£502 GBP
View
B
Retailer 7
-
£863 GBP
View
Most Expensive
B
MOH London
LG625480578 · Nov 5
£916 GBP
View
7 more retailers have this diamond
Prices start from £322 GBPSave up to £594 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 Cushion
£322 GBP