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Oval|Lab Grown|IGI

1.54ct J SI1 Oval Lab Grown Diamond

ID • J/SI1 • IGI LG445037942

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG445037942

Diamond specifications and retailer prices

From £635 GBP
As of November 6, 2026
Save £2,549 GBP (80%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £3,184 GBP at MOH London · As of November 3, 2026
View at MOH London

About this 1.54ct lab-grown oval diamond

This 1.54ct 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 LG445037942 or 445037942. Listed at 10 retailers as of November 3, 2026, with prices from £635 to £3,184, a £2,549 spread on the same certified stone. MOH London lists it at £3,184. 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

1.54
Carat
J
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.3°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG445037942
Dimensions8.80 × 6.58 × 4.13 mm
L/W Ratio1.34
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
8.80 mm6.58 mm1.54 ctJ / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG445037942
Side View
Table 61.0%Crown 34.3°Girdle: STK-THKPavilion 41.1°Culet: NoneDepth 62.8%

Caratlytics Score

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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: £3,184 GBP|Low: £635 GBP|High: £3,223 GBP|Avg: £1,553 GBP|-1.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 1, 2026
Retailer 2£635 GBP
Retailer 3£855 GBP
Retailer 4£991 GBP
Retailer 6£1,121 GBP
Retailer 8£1,414 GBP
Retailer 5£1,575 GBP
Retailer 7£1,953 GBP
MOH London£3,184 GBP

11 data points across 8 retailers

10 retailers£635 GBP to £3,184 GBP

A
Cheapest Retailer
-
£635 GBP
A
Retailer 2
-
£855 GBP
View
A
Retailer 3
-
£929 GBP
View
Retailer 4
-
£991 GBP
View
Price last confirmed 25 days ago
A
Retailer 5
-
£991 GBP
View
B+
Retailer 6
-
£1,121 GBP
View
B+
Retailer 7
-
£1,575 GBP
View
B
Retailer 8
-
£1,858 GBP
View
B
Retailer 9
-
£1,953 GBP
View
Most Expensive
B
MOH London
LG445037942 · Nov 3
£3,184 GBP
View
9 more retailers have this diamond
Prices start from £635 GBPSave up to £2,549 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
1.54ct Oval
£635 GBP