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Oval|Lab Grown|IGI

1.50ct I SI1 Oval Lab Grown Diamond

ID • I/SI1 • IGI LG451057259

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG451057259

Diamond specifications and retailer prices

From £620 GBP
As of November 6, 2026
Save £2,988 GBP (83%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £3,608 GBP at MOH London · As of November 1, 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG451057259 or 451057259. Listed at 11 retailers as of November 1, 2026, with prices from £620 to £3,608, a £2,988 spread on the same certified stone. MOH London lists it at £3,608. 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
I
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.3°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG451057259
Dimensions8.88 × 6.51 × 4.01 mm
L/W Ratio1.36
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
8.88 mm6.51 mm1.50 ctI / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG451057259
Side View
Table 59.5%Crown 35.3°Girdle: MED-THKPavilion 41.1°Culet: NoneDepth 61.6%

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: £3,608 GBP|Low: £620 GBP|High: £3,657 GBP|Avg: £1,786 GBP
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 1, 2026
Retailer 2£620 GBP
Retailer 3£968 GBP
Retailer 6£1,083 GBP
Retailer 4£1,123 GBP
Retailer 7£1,251 GBP
Retailer 9£1,548 GBP
Retailer 5£1,777 GBP
Retailer 8£2,093 GBP
Retailer 10£3,216 GBP
MOH London£3,608 GBP

14 data points across 10 retailers

11 retailers£620 GBP to £3,608 GBP

A
Cheapest Retailer
-
£620 GBP
A
Retailer 2
-
£968 GBP
View
B+
Retailer 3
-
£1,053 GBP
View
B+
Retailer 4
-
£1,083 GBP
View
Final sale: no returns
Retailer 5
-
£1,123 GBP
View
Price last confirmed 25 days ago
B+
Retailer 6
-
£1,123 GBP
View
B+
Retailer 7
-
£1,251 GBP
View
B
Retailer 8
-
£1,777 GBP
View
B
Retailer 9
-
£2,093 GBP
View
B
Retailer 10
-
£2,105 GBP
View
Most Expensive
B
MOH London
LG451057259 · Nov 1
£3,608 GBP
View
10 more retailers have this diamond
Prices start from £620 GBPSave up to £2,988 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