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Round|Lab Grown|IGI

1.51ct J VS1 Round Lab Grown Diamond

ID • J/VS1 • IGI LG451057449

Shape and cutting style on the report: Round brilliant

Certificate IGI LG451057449

Diamond specifications and retailer prices

From £649 GBP
$870 USD
As of October 30, 2026
Save £3,063 GBP (83%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £3,713 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 1.51ct lab-grown round diamond

This 1.51ct lab-grown round sits in the one-and-a-half to two carat band, graded J colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG451057449 or 451057449. Listed at 12 retailers as of October 29, 2026, with prices from £649 to £3,713, a £3,063 spread on the same certified stone. MOH London lists it at £3,713. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
J
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG451057449
Dimensions7.37 × 7.32 × 4.57 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Top View
7.37 mm7.32 mm1.51 ctJ / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG451057449
Side View
Table 54.0%Crown 35.5°Girdle: MediumPavilion 40.3°Culet: NoneDepth 62.1%

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 30
Current: £3,713 GBP|Low: £649 GBP|High: £3,737 GBP|Avg: £1,687 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 2£649 GBP
Retailer 8£991 GBP
Retailer 11£1,078 GBP
Retailer 13£1,110 GBP
Retailer 9£1,149 GBP
Retailer 14£1,276 GBP
Retailer 5£1,341 GBP
Retailer 4£1,580 GBP
Retailer 10£1,817 GBP
Retailer 7£2,113 GBP
Retailer 3£2,142 GBP
Retailer 12£2,155 GBP
Retailer 6£2,572 GBP
MOH London£3,713 GBP

19 data points across 14 retailers

12 retailers£649 GBP to £3,713 GBP

A
Cheapest Retailer
-
£649 GBP
$870 USD
A
Retailer 2
-
£991 GBP
$1,328 USD
View
B+
Retailer 3
-
£1,078 GBP
$1,444 USD
View
B+
Retailer 4
-
£1,110 GBP
$1,487 USD
View
Final sale: no returns
Retailer 5
-
£1,149 GBP
$1,540 USD
View
Price last confirmed 19 days ago
B+
Retailer 6
-
£1,149 GBP
$1,540 USD
View
B+
Retailer 7
-
£1,276 GBP
$1,710 USD
View
B
Retailer 8
-
£1,817 GBP
$2,435 USD
View
B
Retailer 9
-
£2,113 GBP
ZAR 45,734 ZAR
View
B
Retailer 10
-
£2,142 GBP
$2,870 USD
View
B
Retailer 11
-
£2,155 GBP
$2,887 USD
View
Most Expensive
B
MOH London
LG451057449 · Oct 29
£3,713 GBP
View
11 more retailers have this diamond
Prices start from £649 GBPSave up to £3,063 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
1.51ct Round
£649 GBP