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0.37ct F SI2 Round Lab Grown Diamond

EX • F/SI2 • IGI LG459129358

Shape and cutting style on the report: Round brilliant

Certificate IGI LG459129358

Diamond specifications and retailer prices

From £129 GBP
$173 USD
As of October 29, 2026
Save £622 GBP (83%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £751 GBP at MOH London · As of October 25, 2026
View at MOH London

About this 0.37ct lab-grown round diamond

This 0.37ct lab-grown round sits in the sub-half-carat band, graded F colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG459129358 or 459129358. Listed at 9 retailers as of October 25, 2026, with prices from £129 to £751, a £622 spread on the same certified stone. MOH London lists it at £751. 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

0.37
Carat
F
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.6°
Pavilion angle40°
OriginLab Grown
Grading LabIGI
CertificateIGI LG459129358
Dimensions4.57 × 4.53 × 2.84 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
4.57 mm4.53 mm0.37 ctF / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG459129358
Side View
Table 56.0%Crown 36.6°Girdle: MED-STKPavilion 40°Culet: NoneDepth 62.4%

Caratlytics Score

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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: Oct 29
Current: £751 GBP|Low: £124 GBP|High: £759 GBP|Avg: £291 GBP
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 29, 2026
Retailer 3£129 GBP
Retailer 7£150 GBP
Retailer 5£160 GBP
Retailer 9£162 GBP
Retailer 4£187 GBP
Retailer 6£287 GBP
Retailer 2£328 GBP
Retailer 10£336 GBP
Retailer 8£367 GBP
MOH London£751 GBP

16 data points across 10 retailers

9 retailers£129 GBP to £751 GBP

A
Cheapest Retailer
-
£129 GBP
$173 USD
A
Retailer 2
-
£150 GBP
$201 USD
View
A
Retailer 3
-
£160 GBP
$215 USD
View
A
Retailer 4
-
£160 GBP
$215 USD
View
A
Retailer 5
-
£187 GBP
$250 USD
View
B+
Retailer 6
-
£287 GBP
$384 USD
View
B+
Retailer 7
-
£328 GBP
€418 EUR
View
B
Retailer 8
-
£516 GBP
$691 USD
View
Most Expensive
B
MOH London
LG459129358 · Oct 25
£751 GBP
View
8 more retailers have this diamond
Prices start from £129 GBPSave up to £622 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
0.37ct Round
£129 GBP