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Round|Lab Grown|IGI

1.50ct I SI2 Round Lab Grown Diamond

VG • I/SI2 • IGI LG425067129

Shape and cutting style on the report: Round brilliant

Certificate IGI LG425067129

Diamond specifications and retailer prices

From £632 GBP
As of November 5, 2026
Save £2,768 GBP (81%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £3,400 GBP at MOH London · As of November 3, 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 I colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade and certified by IGI LG425067129 or 425067129. Listed at 10 retailers as of November 3, 2026, with prices from £632 to £3,400, a £2,768 spread on the same certified stone. MOH London lists it at £3,400. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.50
Carat
I
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.7°
Pavilion angle39.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG425067129
Dimensions7.24 × 7.29 × 4.55 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
7.24 mm7.29 mm1.50 ctI / SI2
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG425067129
Side View
Table 54.0%Crown 36.7°GirdlePavilion 39.7°Culet: NoneDepth 62.6%

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: £3,400 GBP|Low: £632 GBP|High: £3,445 GBP|Avg: £1,611 GBP
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 1, 2026
Retailer 2£632 GBP
Retailer 4£912 GBP
Retailer 7£993 GBP
Retailer 9£1,022 GBP
Retailer 5£1,058 GBP
Retailer 10£1,492 GBP
Retailer 6£1,677 GBP
Retailer 8£1,983 GBP
Retailer 11£2,027 GBP
Retailer 3£2,369 GBP
MOH London£3,400 GBP

15 data points across 11 retailers

10 retailers£632 GBP to £3,400 GBP

A
Cheapest Retailer
-
£632 GBP
B+
Retailer 2
-
£912 GBP
View
B+
Retailer 3
-
£993 GBP
View
B+
Retailer 4
-
£1,022 GBP
View
Final sale: no returns
B+
Retailer 5
-
£1,058 GBP
View
Retailer 6
-
£1,058 GBP
View
Price last confirmed 25 days ago
B
Retailer 7
-
£1,677 GBP
View
B
Retailer 8
-
£1,983 GBP
View
B
Retailer 9
-
£2,027 GBP
View
Most Expensive
C
MOH London
LG425067129 · Nov 3
£3,400 GBP
View
9 more retailers have this diamond
Prices start from £632 GBPSave up to £2,768 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
£632 GBP