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Oval|Lab Grown|IGI

1.50ct J SI1 Oval Lab Grown Diamond

ID • J/SI1 • IGI LG451057056

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG451057056

Diamond specifications and retailer prices

From £620 GBP
As of November 6, 2026
Save £2,936 GBP (83%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £3,556 GBP at MOH London · As of November 5, 2026
View at MOH London

About this 1.5ct lab-grown oval diamond

This 1.5ct lab-grown oval sits in the one-and-a-half to two carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG451057056 or 451057056. Listed at 11 retailers as of November 5, 2026, with prices from £620 to £3,556, a £2,936 spread on the same certified stone. MOH London lists it at £3,556. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.50
Carat
J
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG451057056
Dimensions9.22 × 6.53 × 3.97 mm
L/W Ratio1.41
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
9.22 mm6.53 mm1.50 ctJ / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG451057056
Side View
Table 60.0%Crown 33°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 60.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £3,556 GBP|Low: £620 GBP|High: £3,613 GBP|Avg: £1,937 GBP|-1.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 5, 2026
Retailer 2£620 GBP
Retailer 3£1,077 GBP
Retailer 6£1,205 GBP
Retailer 4£1,248 GBP
Retailer 8£1,375 GBP
Retailer 9£1,697 GBP
Retailer 5£1,970 GBP
Retailer 7£2,266 GBP
MOH London£3,556 GBP
Retailer 10£3,575 GBP

13 data points across 10 retailers

11 retailers£620 GBP to £3,556 GBP

A
Cheapest Retailer
-
£620 GBP
B+
Retailer 2
-
£1,077 GBP
View
B+
Retailer 3
-
£1,171 GBP
View
B+
Retailer 4
-
£1,205 GBP
View
Final sale: no returns
Retailer 5
-
£1,248 GBP
View
Price last confirmed 25 days ago
B+
Retailer 6
-
£1,248 GBP
View
B+
Retailer 7
-
£1,375 GBP
View
B
Retailer 8
-
£1,970 GBP
View
B
Retailer 9
-
£2,266 GBP
View
B
Retailer 10
-
£2,340 GBP
View
Most Expensive
B
MOH London
LG451057056 · Nov 5
£3,556 GBP
View
10 more retailers have this diamond
Prices start from £620 GBPSave up to £2,936 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
1.50ct Oval
£620 GBP