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Round|Lab Grown|IGI

1.50ct K SI1 Round Lab Grown Diamond

ID • K/SI1 • IGI LG492112355

Shape and cutting style on the report: Round brilliant

Certificate IGI LG492112355

Diamond specifications and retailer prices

From £694 GBP
As of November 5, 2026
Save £2,028 GBP (75%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £2,722 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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG492112355 or 492112355. Listed at 9 retailers as of November 5, 2026, with prices from £694 to £2,722, a £2,028 spread on the same certified stone. MOH London lists it at £2,722. 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
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.8°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG492112355
Dimensions7.32 × 7.35 × 4.52 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
7.32 mm7.35 mm1.50 ctK / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG492112355
Side View
Table 55.5%Crown 35.8°GirdlePavilion 40.2°Culet: NoneDepth 61.6%

Caratlytics Score

How it works →
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 5
Current: £2,722 GBP|Low: £666 GBP|High: £2,767 GBP|Avg: £1,361 GBP|-1.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 5, 2026
Retailer 4£694 GBP
Retailer 5£805 GBP
Retailer 7£805 GBP
Retailer 2£936 GBP
Retailer 8£1,186 GBP
Retailer 6£1,289 GBP
Retailer 3£1,791 GBP
MOH London£2,722 GBP

16 data points across 8 retailers

9 retailers£694 GBP to £2,722 GBP

A
Cheapest Retailer
-
£694 GBP
A
Retailer 2
-
£755 GBP
View
B+
Retailer 3
-
£805 GBP
View
Retailer 4
-
£805 GBP
View
Price last confirmed 25 days ago
B+
Retailer 5
-
£936 GBP
View
B
Retailer 6
-
£1,289 GBP
View
B
Retailer 7
-
£1,791 GBP
View
B
Retailer 8
-
£2,263 GBP
View
Most Expensive
B
MOH London
LG492112355 · Nov 5
£2,722 GBP
View
8 more retailers have this diamond
Prices start from £694 GBPSave up to £2,028 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
£694 GBP