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Round|Lab Grown|IGI

3.09ct J VS1 Round Lab Grown Diamond

ID • J/VS1 • IGI LG508140128

Shape and cutting style on the report: Round brilliant

Certificate IGI LG508140128

Diamond specifications and retailer prices

From £440 GBP
$590 USD
As of October 29, 2026
Save £1,942 GBP (82%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £2,382 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 3.09ct lab-grown round diamond

This 3.09ct lab-grown round sits in the three to five carat band, graded J colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG508140128 or 508140128. Listed at 16 retailers as of October 29, 2026, with prices from £440 to £2,382, a £1,942 spread on the same certified stone. MOH London lists it at £2,382. 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

3.09
Carat
J
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle41.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG508140128
Dimensions9.39 × 9.33 × 5.76 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
9.39 mm9.33 mm3.09 ctJ / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG508140128
Side View
Table 59.5%Crown 34°Girdle: MediumPavilion 41.3°Culet: NoneDepth 61.6%

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: £2,382 GBP|Low: £351 GBP|High: £2,397 GBP|Avg: £1,143 GBP|+0.6%
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
October 29, 2026
Retailer 9£440 GBP
Retailer 12£492 GBP
Retailer 4£592 GBP
Retailer 6£642 GBP
Retailer 11£750 GBP
Retailer 8£839 GBP
Retailer 13£895 GBP
Retailer 5£1,128 GBP
Retailer 2£1,185 GBP
Retailer 7£1,354 GBP
Retailer 3£1,766 GBP
Retailer 10£2,023 GBP
MOH London£2,382 GBP

26 data points across 13 retailers

16 retailers£440 GBP to £2,382 GBP

A
Cheapest Retailer
-
£440 GBP
$590 USD
A
Retailer 2
-
£492 GBP
$659 USD
View
Final sale: no returns
A
Retailer 3
-
£493 GBP
$660 USD
View
A
Retailer 4
-
£546 GBP
$731 USD
View
Retailer 5
-
£546 GBP
$731 USD
View
Price last confirmed 14 days ago
A
Retailer 6
-
£592 GBP
HK$6,200 HKD
View
A
Retailer 7
-
£642 GBP
$860 USD
View
A
Retailer 8
-
£750 GBP
$1,005 USD
View
B+
Retailer 9
-
£839 GBP
$1,124 USD
View
B+
Retailer 10
-
£895 GBP
$1,199 USD
View
B+
Retailer 11
-
£1,185 GBP
ZAR 25,651 ZAR
View
B
Retailer 12
-
£1,354 GBP
$1,814 USD
View
B
Retailer 13
-
£1,435 GBP
$1,923 USD
View
B
Retailer 14
-
£1,766 GBP
$2,366 USD
View
B
Retailer 15
-
£2,023 GBP
$2,710 USD
View
Most Expensive
B
MOH London
LG508140128 · Oct 29
£2,382 GBP
View
15 more retailers have this diamond
Prices start from £440 GBPSave up to £1,942 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
3.09ct Round
£440 GBP