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Round|Lab Grown|IGI

3.90ct H VS1 Round Lab Grown Diamond

ID • H/VS1 • IGI LG626427056

Shape and cutting style on the report: Round brilliant

Certificate IGI LG626427056

Diamond specifications and retailer prices

From £372 GBP
$499 USD
As of October 29, 2026
Save £1,565 GBP (81%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £1,937 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 3.9ct lab-grown round diamond

This 3.9ct lab-grown round sits in the three to five carat band, graded H colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG626427056 or 626427056. Listed at 11 retailers as of October 29, 2026, with prices from £372 to £1,937, a £1,565 spread on the same certified stone. MOH London lists it at £1,937. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

3.90
Carat
H
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG626427056
Dimensions10.21 × 10.13 × 6.16 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
10.21 mm10.13 mm3.90 ctH / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG626427056
Side View
Table 59.0%Crown 34°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 60.6%

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 29
Current: £1,937 GBP|Low: £298 GBP|High: £1,951 GBP|Avg: £1,062 GBP|-0.5%
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
Retailer 14
October 30, 2026
Retailer 10£372 GBP
Retailer 12£417 GBP
Retailer 13£583 GBP
Retailer 2£644 GBP
Retailer 7£676 GBP
Retailer 11£718 GBP
Retailer 8£720 GBP
Retailer 6£946 GBP
Retailer 5£1,174 GBP
Retailer 9£1,192 GBP
Retailer 3£1,284 GBP
Retailer 14£1,670 GBP
Retailer 4£1,887 GBP
MOH London£1,937 GBP

26 data points across 14 retailers

11 retailers£372 GBP to £1,937 GBP

A
Cheapest Retailer
-
£372 GBP
$499 USD
A
Retailer 2
-
£417 GBP
$559 USD
View
Final sale: no returns
A
Retailer 3
-
£417 GBP
$559 USD
View
A
Retailer 4
-
£583 GBP
HK$6,100 HKD
View
A
Retailer 5
-
£644 GBP
View
A
Retailer 6
-
£676 GBP
€862 EUR
View
B+
Retailer 7
-
£718 GBP
$962 USD
View
A
Retailer 8
-
£720 GBP
$965 USD
View
B+
Retailer 9
-
£1,192 GBP
$1,597 USD
View
B+
Retailer 10
-
£1,214 GBP
$1,627 USD
View
Most Expensive
B
MOH London
LG626427056 · Oct 29
£1,937 GBP
View
10 more retailers have this diamond
Prices start from £372 GBPSave up to £1,565 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
3.90ct Round
£372 GBP