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Round|Lab Grown|IGI

1.50ct J SI2 Round Lab Grown Diamond

ID • J/SI2 • IGI LG480150414

Shape and cutting style on the report: Round brilliant

Certificate IGI LG480150414

Diamond specifications and retailer prices

From £617 GBP
As of November 5, 2026
Save £2,439 GBP (80%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £3,055 GBP at MOH London · As of November 5, 2026
View at MOH London

About this 1.5ct lab-grown round diamond

This 1.5ct lab-grown round sits in the one-and-a-half to two carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG480150414 or 480150414. Listed at 11 retailers as of November 5, 2026, with prices from £617 to £3,055, a £2,439 spread on the same certified stone. MOH London lists it at £3,055. 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
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.8°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG480150414
Dimensions7.27 × 7.29 × 4.55 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
7.27 mm7.29 mm1.50 ctJ / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG480150414
Side View
Table 55.5%Crown 35.8°Girdle: MED-STKPavilion 40.2°Culet: NoneDepth 62.5%

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: Nov 5
Current: £3,055 GBP|Low: £617 GBP|High: £3,104 GBP|Avg: £1,352 GBP|-0.3%
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
November 5, 2026
Retailer 6£617 GBP
Retailer 7£779 GBP
Retailer 11£847 GBP
Retailer 13£872 GBP
Retailer 8£903 GBP
Retailer 10£903 GBP
Retailer 2£1,041 GBP
Retailer 3£1,305 GBP
Retailer 9£1,441 GBP
Retailer 12£1,693 GBP
Retailer 4£1,888 GBP
Retailer 5£2,019 GBP
MOH London£3,055 GBP

38 data points across 13 retailers

11 retailers£617 GBP to £3,055 GBP

A
Cheapest Retailer
-
£617 GBP
A
Retailer 2
-
£779 GBP
View
B+
Retailer 3
-
£847 GBP
View
B+
Retailer 4
-
£872 GBP
View
Final sale: no returns
B+
Retailer 5
-
£903 GBP
View
Retailer 6
-
£903 GBP
View
Price last confirmed 25 days ago
B+
Retailer 7
-
£1,041 GBP
View
B
Retailer 8
-
£1,441 GBP
View
B
Retailer 9
-
£1,693 GBP
View
B
Retailer 10
-
£1,888 GBP
View
Most Expensive
B
MOH London
LG480150414 · Nov 5
£3,055 GBP
View
10 more retailers have this diamond
Prices start from £617 GBPSave up to £2,439 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 Round
£617 GBP