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0.31ct F SI1 Round Lab Grown Diamond

ID • F/SI1 • IGI LG459193300

Shape and cutting style on the report: Round brilliant

Certificate IGI LG459193300

Diamond specifications and retailer prices

From €152 EUR
$170 USD
As of November 1, 2026
Save €727 EUR (83%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: €879 EUR at MOH London · As of November 1, 2026
View at MOH London

About this 0.31ct lab-grown round diamond

This 0.31ct 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 LG459193300 or 459193300. Listed at 10 retailers as of November 1, 2026, with prices from €152 to €879, a €727 spread on the same certified stone. MOH London lists it at €879. 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

0.31
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.8°
Pavilion angle40°
OriginLab Grown
Grading LabIGI
CertificateIGI LG459193300
Dimensions4.39 × 4.34 × 2.64 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
4.39 mm4.34 mm0.31 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG459193300
Side View
Table 57.0%Crown 34.8°Girdle: MediumPavilion 40°Culet: NoneDepth 60.5%

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: €879 EUR|Low: €145 EUR|High: €890 EUR|Avg: €319 EUR
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 2, 2026
Retailer 4€152 EUR
Retailer 8€169 EUR
Retailer 7€176 EUR
Retailer 5€188 EUR
Retailer 9€252 EUR
Retailer 2€334 EUR
Retailer 6€336 EUR
Retailer 3€387 EUR
MOH London€879 EUR

42 data points across 9 retailers

10 retailers€152 EUR to €879 EUR

A
Cheapest Retailer
-
€152 EUR
$170 USD
A
Retailer 2
-
€169 EUR
$190 USD
View
A
Retailer 3
-
€176 EUR
$197 USD
View
Retailer 4
-
€188 EUR
$211 USD
View
Price last confirmed 8 days ago
A
Retailer 5
-
€188 EUR
$211 USD
View
B+
Retailer 6
-
€334 EUR
£295 GBP
View
B+
Retailer 7
-
€336 EUR
$377 USD
View
B+
Retailer 8
-
€387 EUR
View
B
Retailer 9
-
€604 EUR
$678 USD
View
Most Expensive
B
MOH London
LG459193300 · Nov 1
€879 EUR
£776 GBP
View
9 more retailers have this diamond
Prices start from €152 EURSave up to €727 EUR

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
0.31ct Round
€152 EUR