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Oval|Lab Grown|IGI

1.50ct J SI1 Oval Lab Grown Diamond

ID • J/SI1 • IGI LG407912686

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG407912686

Diamond specifications and retailer prices

From £620 GBP
As of November 6, 2026
Save £2,484 GBP (80%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £3,104 GBP at MOH London · As of November 3, 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 LG407912686 or 407912686. Listed at 11 retailers as of November 3, 2026, with prices from £620 to £3,104, a £2,484 spread on the same certified stone. MOH London lists it at £3,104. 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
SymmetryVery Good
FluorescenceNone
Crown angle33.8°
Pavilion angle42°
OriginLab Grown
Grading LabIGI
CertificateIGI LG407912686
Dimensions8.87 × 6.59 × 4.16 mm
L/W Ratio1.35
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory grown diamond was created by chemical vapor deposition process (CVD) Type IIa
Top View
8.87 mm6.59 mm1.50 ctJ / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG407912686
Side View
Table 57.0%Crown 33.8°Girdle: MED-STKPavilion 42°Culet: NoneDepth 63.1%

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: £3,104 GBP|Low: £620 GBP|High: £3,142 GBP|Avg: £1,475 GBP|-1.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 1, 2026
Retailer 2£620 GBP
Retailer 6£833 GBP
Retailer 9£932 GBP
Retailer 7£966 GBP
Retailer 10£966 GBP
Retailer 3£1,033 GBP
Retailer 5£1,095 GBP
Retailer 12£1,382 GBP
Retailer 8£1,537 GBP
Retailer 11£1,960 GBP
Retailer 4£2,766 GBP
MOH London£3,104 GBP

13 data points across 12 retailers

11 retailers£620 GBP to £3,104 GBP

A
Cheapest Retailer
-
£620 GBP
B+
Retailer 2
-
£833 GBP
View
B+
Retailer 3
-
£906 GBP
View
B+
Retailer 4
-
£932 GBP
View
Final sale: no returns
B+
Retailer 5
-
£966 GBP
View
Retailer 6
-
£966 GBP
View
Price last confirmed 25 days ago
B+
Retailer 7
-
£1,095 GBP
View
B
Retailer 8
-
£1,537 GBP
View
B
Retailer 9
-
£1,811 GBP
View
B
Retailer 10
-
£1,960 GBP
View
Most Expensive
B
MOH London
LG407912686 · Nov 3
£3,104 GBP
View
10 more retailers have this diamond
Prices start from £620 GBPSave up to £2,484 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