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Round|Lab Grown|IGI

1.54ct K SI2 Round Lab Grown Diamond

ID • K/SI2 • IGI LG492112356

Shape and cutting style on the report: Round brilliant

Certificate IGI LG492112356

Diamond specifications and retailer prices

From £1,368 GBP
As of November 5, 2026
Save £1,606 GBP (54%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £4,520 GBP at MOH London · As of November 5, 2026
View at MOH London

About this 1.54ct lab-grown round diamond

This 1.54ct 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 LG492112356 or 492112356. Listed at 8 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

1.54
Carat
K
Colour
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.3°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG492112356
Dimensions7.48 × 7.51 × 4.52 mm
L/W Ratio1.00
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
7.48 mm7.51 mm1.54 ctK / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG492112356
Side View
Table 57.0%Crown 33.3°Girdle: THN-MEDPavilion 40.7°Culet: NoneDepth 60.3%

Caratlytics Score

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

Price History

Last verified: Nov 5
Current: £4,520 GBP|Low: £1,314 GBP|High: £4,592 GBP|Avg: £2,535 GBP|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 5, 2026
Retailer 3£1,368 GBP
Retailer 6£1,488 GBP
Retailer 4£1,587 GBP
Retailer 8£2,100 GBP
Retailer 5£2,488 GBP
Retailer 2£2,670 GBP
Retailer 7£2,974 GBP
Retailer 9£3,551 GBP
MOH London£4,520 GBP

15 data points across 9 retailers

8 retailers£1,368 GBP to £2,974 GBP

B+
Cheapest Retailer
-
£1,368 GBP
B
Retailer 2
-
£1,488 GBP
View
Retailer 3
-
£1,587 GBP
View
Price last confirmed 25 days ago
B
Retailer 4
-
£1,587 GBP
View
B
Retailer 5
-
£2,488 GBP
View
B
Retailer 6
-
£2,670 GBP
View
B
Retailer 7
-
£2,974 GBP
View
Most Expensive
MOH London
LG492112356 · Nov 5
£4,520 GBP
View
Price under review
7 more retailers have this diamond
Prices start from £1,368 GBPSave up to £1,606 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+
1.54ct Round
£1,368 GBP