Round|Lab Grown|IGI

1.50ct G SI1 Round Lab Grown Diamond

ID • G/SI1 • IGI LG828643490

Shape and cutting style on the report: Round brilliant

Certificate IGI LG828643490

Diamond specifications and retailer prices

From £190 GBP
As of November 4, 2026
Save £601 GBP (76%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £792 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 G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG828643490 or 828643490. Listed at 15 retailers as of November 4, 2026, with prices from £190 to £792, a £601 spread on the same certified stone. MOH London lists it at £792. 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
G
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG828643490
Dimensions7.39 × 7.37 × 4.52 mm
L/W Ratio1.00
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.39 mm7.37 mm1.50 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG828643490
Side View
Table 58.0%Crown 33°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 61.2%

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 4
Current: £792 GBP|Low: £190 GBP|High: £823 GBP|Avg: £426 GBP|-3.7%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 9£190 GBP
Retailer 2£279 GBP
Retailer 7£299 GBP
Retailer 4£300 GBP
Retailer 5£303 GBP
Retailer 3£340 GBP
Retailer 11£528 GBP
Retailer 8£556 GBP
Retailer 6£577 GBP
Retailer 10£632 GBP
MOH London£792 GBP

41 data points across 11 retailers

15 retailers£190 GBP to £792 GBP

Retailer 1
-
£139 GBP
Price last confirmed 27 days ago
Retailer 2
-
£160 GBP
View
Price last confirmed 24 days ago
Retailer 3
-
£172 GBP
View
Price last confirmed 38 days ago
A
Retailer 4
-
£190 GBP
View
A
Retailer 5
-
£279 GBP
View
B+
Retailer 6
-
£299 GBP
View
A
Retailer 7
-
£300 GBP
View
A
Retailer 8
-
£303 GBP
View
A
Retailer 9
-
£340 GBP
View
Retailer 10
-
£528 GBP
View
Price last confirmed 12 days ago
Retailer 11
-
£553 GBP
View
Price last confirmed 30 days ago
B
Retailer 12
-
£556 GBP
View
B
Retailer 13
-
£577 GBP
View
B
Retailer 14
-
£632 GBP
View
Most Expensive
B
MOH London
LG828643490 · Nov 5
£792 GBP
View
14 more retailers have this diamond
Prices start from £190 GBPSave up to £601 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
£190 GBP