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Round|Lab Grown|IGI

3.90ct H VS1 Round Lab Grown Diamond

ID • H/VS1 • IGI LG629472637

Shape and cutting style on the report: Round brilliant

Certificate IGI LG629472637

Diamond specifications and retailer prices

From £1,049 GBP
CA$1,952 CAD
As of October 30, 2026
Save £465 GBP (31%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: £1,514 GBP at The Diamond Guys · As of October 30, 2026
View at The Diamond Guys

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 LG629472637 or 629472637. Listed at 2 retailers as of October 30, 2026, with prices from £1,049 to £1,514, a £465 spread on the same certified stone. The Diamond Guys lists it at £1,514. 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 angle34.2°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG629472637
Dimensions10.17 × 10.08 × 6.18 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
10.17 mm10.08 mm3.90 ctH / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG629472637
Side View
Table 58.0%Crown 34.2°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 61.1%

Caratlytics Score

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B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: £1,809 GBP|Low: £222 GBP|High: £2,627 GBP|Avg: £1,294 GBP|-3.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
The Diamond Guys
August 3, 2026
Retailer 7£636 GBP
Retailer 11£721 GBP
Retailer 3£743 GBP
Retailer 5£886 GBP
Retailer 10£891 GBP
Retailer 6£945 GBP
Retailer 8£1,049 GBP
Retailer 9£1,291 GBP
Retailer 4£1,411 GBP
The Diamond Guys£1,514 GBP
Retailer 1£1,809 GBP
Retailer 12£2,373 GBP
Retailer 2£2,470 GBP

38 data points across 13 retailers

2 retailers£1,049 GBP to £1,514 GBP

B+
Cheapest Retailer
-
£1,049 GBP
CA$1,952 CAD
Most Expensive
B
The Diamond Guys
1954433949 · Oct 30
£1,514 GBP
$2,028 USD
View
1 more retailer has this diamond
Prices start from £1,049 GBPSave up to £465 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.

B+
3.90ct Round
£1,049 GBP