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Round|Lab Grown|IGI

1.50ct K SI2 Round Lab Grown Diamond

EX • K/SI2 • IGI LG436073528

Shape and cutting style on the report: Round brilliant

Certificate IGI LG436073528

Diamond specifications and retailer prices

From £1,333 GBP
As of November 5, 2026
Save £1,565 GBP (54%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £4,405 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 K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG436073528 or 436073528. Listed at 9 retailers as of November 5, 2026, with a 117% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
K
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle31.4°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG436073528
Dimensions7.53 × 7.47 × 4.45 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
7.53 mm7.47 mm1.50 ctK / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG436073528
Side View
Table 55.0%Crown 31.4°Girdle: MediumPavilion 40.2°Culet: NoneDepth 59.2%

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: £4,405 GBP|Low: £1,279 GBP|High: £4,475 GBP|Avg: £2,263 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
November 5, 2026
Retailer 6£1,333 GBP
Retailer 10£1,450 GBP
Retailer 7£1,546 GBP
Retailer 9£1,546 GBP
Retailer 3£1,562 GBP
Retailer 2£1,691 GBP
Retailer 12£2,051 GBP
Retailer 8£2,425 GBP
Retailer 5£2,601 GBP
Retailer 11£2,898 GBP
Retailer 4£3,460 GBP
MOH London£4,405 GBP

43 data points across 12 retailers

9 retailers£1,333 GBP to £2,898 GBP

B+
Cheapest Retailer
-
£1,333 GBP
B
Retailer 2
-
£1,450 GBP
View
B
Retailer 3
-
£1,546 GBP
View
Retailer 4
-
£1,546 GBP
View
Price last confirmed 25 days ago
B
Retailer 5
-
£1,691 GBP
View
B
Retailer 6
-
£2,425 GBP
View
B
Retailer 7
-
£2,601 GBP
View
C
Retailer 8
-
£2,898 GBP
View
Most Expensive
MOH London
LG436073528 · Nov 5
£4,405 GBP
View
Price under review
8 more retailers have this diamond
Prices start from £1,333 GBPSave up to £1,565 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
£1,333 GBP