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Round|Lab Grown|IGI

1.50ct I SI2 Round Lab Grown Diamond

VG • I/SI2 • IGI LG425067191

Shape and cutting style on the report: Round brilliant

Certificate IGI LG425067191

Diamond specifications and retailer prices

From £632 GBP
As of November 5, 2026
Save £2,759 GBP (81%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £3,390 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 I colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade and certified by IGI LG425067191 or 425067191. Listed at 11 retailers as of November 5, 2026, with prices from £632 to £3,390, a £2,759 spread on the same certified stone. MOH London lists it at £3,390. 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
SymmetryVery Good
FluorescenceNone
Crown angle30°
Pavilion angle39.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG425067191
Dimensions7.56 × 7.54 × 4.25 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
7.56 mm7.54 mm1.50 ctI / SI2
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG425067191
Side View
Table 63.5%Crown 30°Girdle: MED-STKPavilion 39.8°Culet: NoneDepth 56.2%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: £3,390 GBP|Low: £632 GBP|High: £3,445 GBP|Avg: £1,578 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
November 5, 2026
Retailer 4£632 GBP
Retailer 5£912 GBP
Retailer 8£1,022 GBP
Retailer 6£1,058 GBP
Retailer 11£1,146 GBP
Retailer 2£1,314 GBP
Retailer 9£1,492 GBP
Retailer 7£1,677 GBP
Retailer 10£2,027 GBP
Retailer 3£2,369 GBP
MOH London£3,390 GBP

43 data points across 11 retailers

11 retailers£632 GBP to £3,390 GBP

B+
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
-
£1,314 GBP
View
B
Retailer 8
-
£1,677 GBP
View
B
Retailer 9
-
£1,983 GBP
View
B
Retailer 10
-
£2,027 GBP
View
Most Expensive
C
MOH London
LG425067191 · Nov 5
£3,390 GBP
View
10 more retailers have this diamond
Prices start from £632 GBPSave up to £2,759 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.

B+
1.50ct Round
£632 GBP