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Round|Lab Grown|IGI

0.30ct F SI1 Round Lab Grown Diamond

EX • F/SI1 • IGI LG462172690

Shape and cutting style on the report: Round brilliant

Certificate IGI LG462172690

Diamond specifications and retailer prices

From £123 GBP
$165 USD
As of November 1, 2026
Save £596 GBP (83%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £719 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 0.3ct lab-grown round diamond

This 0.3ct lab-grown round sits in the sub-half-carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG462172690 or 462172690. Listed at 11 retailers as of October 29, 2026, with prices from £123 to £719, a £596 spread on the same certified stone. MOH London lists it at £719. 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

0.30
Carat
F
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle34.2°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG462172690
Dimensions4.30 × 4.32 × 2.60 mm
L/W Ratio1.00
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
4.30 mm4.32 mm0.30 ctF / SI1
OriginLab Grown
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG462172690
Side View
Table 61.5%Crown 34.2°Girdle: MED-STKPavilion 40.7°Culet: NoneDepth 60.3%

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: Nov 1
Current: £719 GBP|Low: £119 GBP|High: £724 GBP|Avg: £271 GBP|+0.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 2, 2026
Retailer 5£123 GBP
Retailer 8£143 GBP
Retailer 3£149 GBP
Retailer 6£153 GBP
Retailer 2£271 GBP
Retailer 7£275 GBP
Retailer 4£317 GBP
MOH London£719 GBP

43 data points across 8 retailers

11 retailers£123 GBP to £719 GBP

A
Cheapest Retailer
-
£123 GBP
$165 USD
A
Retailer 2
-
£143 GBP
$192 USD
View
B+
Retailer 3
-
£149 GBP
$200 USD
View
Retailer 4
-
£153 GBP
$205 USD
View
Price last confirmed 8 days ago
B+
Retailer 5
-
£153 GBP
$205 USD
View
B
Retailer 6
-
£271 GBP
View
B
Retailer 7
-
£275 GBP
$368 USD
View
B
Retailer 8
-
£317 GBP
€405 EUR
View
B
Retailer 9
-
£354 GBP
View
B
Retailer 10
-
£493 GBP
$660 USD
View
Most Expensive
B
MOH London
LG462172690 · Oct 29
£719 GBP
View
10 more retailers have this diamond
Prices start from £123 GBPSave up to £596 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
0.30ct Round
£123 GBP