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Round|Lab Grown|IGI

1.00ct J VS1 Round Lab Grown Diamond

ID • J/VS1 • IGI LG492122413

Shape and cutting style on the report: Round brilliant

Certificate IGI LG492122413

Diamond specifications and retailer prices

From £372 GBP
$496 USD
As of October 29, 2026
Save £1,565 GBP (81%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £1,938 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 1ct lab-grown round diamond

This 1ct lab-grown round sits in the classic one-carat band, graded J colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG492122413 or 492122413. Listed at 13 retailers as of October 29, 2026, with prices from £372 to £1,938, a £1,565 spread on the same certified stone. MOH London lists it at £1,938. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.00
Carat
J
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.3°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG492122413
Dimensions6.50 × 6.49 × 3.89 mm
L/W Ratio1.00
Girdle conditionFaceted
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
6.50 mm6.49 mm1.00 ctJ / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG492122413
Side View
Table 58.0%Crown 34.3°Girdle: THN-MEDPavilion 40.4°CuletDepth 59.9%

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: £1,938 GBP|Low: £357 GBP|High: £1,951 GBP|Avg: £762 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
October 30, 2026
Retailer 7£372 GBP
Retailer 8£416 GBP
Retailer 3£417 GBP
Retailer 10£462 GBP
Retailer 9£548 GBP
Retailer 5£567 GBP
Retailer 11£719 GBP
Retailer 4£794 GBP
Retailer 2£954 GBP
Retailer 6£1,241 GBP
MOH London£1,938 GBP

28 data points across 11 retailers

13 retailers£372 GBP to £1,938 GBP

A
Cheapest Retailer
-
£372 GBP
$496 USD
A
Retailer 2
-
£416 GBP
$554 USD
View
Final sale: no returns
A
Retailer 3
-
£417 GBP
$555 USD
View
A
Retailer 4
-
£462 GBP
$615 USD
View
Retailer 5
-
£462 GBP
$615 USD
View
Price last confirmed 13 days ago
B+
Retailer 6
-
£548 GBP
$730 USD
View
A
Retailer 7
-
£567 GBP
$755 USD
View
B+
Retailer 8
-
£719 GBP
$957 USD
View
B+
Retailer 9
-
£794 GBP
ZAR 17,074 ZAR
View
B+
Retailer 10
-
£954 GBP
View
B
Retailer 11
-
£1,214 GBP
$1,617 USD
View
B
Retailer 12
-
£1,241 GBP
$1,653 USD
View
Most Expensive
B
MOH London
LG492122413 · Oct 29
£1,938 GBP
View
12 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
1.00ct Round
£372 GBP