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Round|Lab Grown|IGI

4.09ct I VVS2 Round Lab Grown Diamond

ID • I/VVS2 • IGI LG839675871

Shape and cutting style on the report: Round brilliant

Certificate IGI LG839675871

Diamond specifications and retailer prices

From £355 GBP
$473 USD
As of October 29, 2026
Save £3,745 GBP (91%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £4,100 GBP at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 4.09ct lab-grown round diamond

This 4.09ct lab-grown round sits in the three to five carat band, graded I colour (near-colourless) and VVS2 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG839675871 or 839675871. Listed at 19 retailers as of October 29, 2026, with prices from £355 to £4,100, a £3,745 spread on the same certified stone. Brilliant Earth lists it at £4,100. 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

4.09
Carat
I
Colour
VVS2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.2°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG839675871
Dimensions10.24 × 10.26 × 6.21 mm
L/W Ratio1.00
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.24 mm10.26 mm4.09 ctI / VVS2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG839675871
Side View
Table 60.0%Crown 35.2°Girdle: MED-STKPavilion 40.2°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: £656 GBP|Low: £349 GBP|High: £1,982 GBP|Avg: £945 GBP|-1.1%
Retailer 1
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Retailer 18
October 29, 2026
Retailer 5£355 GBP
Retailer 8£406 GBP
Retailer 13£440 GBP
Retailer 10£451 GBP
Retailer 14£490 GBP
Retailer 11£493 GBP
Retailer 16£589 GBP
Retailer 18£601 GBP
Retailer 1£656 GBP
Retailer 12£694 GBP
Retailer 15£876 GBP
Retailer 2£1,036 GBP
Retailer 6£1,206 GBP
Retailer 17£1,414 GBP
Retailer 4£1,419 GBP
Retailer 3£1,436 GBP
Retailer 7£1,875 GBP
Retailer 9£1,956 GBP

29 data points across 18 retailers

19 retailers£355 GBP to £4,100 GBP

A
Cheapest Retailer
-
£355 GBP
$473 USD
A
Retailer 2
-
£406 GBP
$540 USD
View
A
Retailer 3
-
£440 GBP
$586 USD
View
A
Retailer 4
-
£451 GBP
$601 USD
View
Price last confirmed 13 days ago
A
Retailer 5
-
£490 GBP
HK$5,100 HKD
View
A
Retailer 6
-
£493 GBP
View
B+
Retailer 7
-
£589 GBP
$785 USD
View
A
Retailer 8
-
£601 GBP
$800 USD
View
A
Retailer 9
-
£656 GBP
€832 EUR
View
A
Retailer 10
-
£694 GBP
$924 USD
View
A
Retailer 11
-
£876 GBP
ZAR 18,835 ZAR
View
A
Retailer 12
-
£1,036 GBP
$1,379 USD
View
B+
Retailer 13
-
£1,206 GBP
$1,606 USD
View
B+
Retailer 14
-
£1,414 GBP
$1,883 USD
View
B+
Retailer 15
-
£1,419 GBP
SGD 2,554 SGD
View
B+
Retailer 16
-
£1,436 GBP
$1,913 USD
View
B+
Retailer 17
-
£1,875 GBP
View
B
Retailer 18
-
£1,956 GBP
$2,605 USD
View
Price last confirmed 8 days ago
Most Expensive
B
Brilliant Earth
21790516A · Oct 29
£4,100 GBP
$5,460 USD
View
18 more retailers have this diamond
Prices start from £355 GBPSave up to £3,745 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
4.09ct Round
£355 GBP