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Round|Lab Grown|IGI

2.51ct F SI1 Round Lab Grown Diamond

ID • F/SI1 • IGI LG803651149

Shape and cutting style on the report: Round brilliant

Certificate IGI LG803651149

Diamond specifications and retailer prices

From €569 EUR
$638 USD
As of November 2, 2026
Save €1,128 EUR (66%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: €1,697 EUR at MOH London · As of November 1, 2026
View at MOH London

About this 2.51ct lab-grown round diamond

This 2.51ct lab-grown round sits in the two to three carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG803651149 or 803651149. Listed at 5 retailers as of November 1, 2026, with prices from €569 to €1,697, a €1,128 spread on the same certified stone. MOH London lists it at €1,697. 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

2.51
Carat
F
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.9°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG803651149
Dimensions8.74 × 8.72 × 5.36 mm
L/W Ratio1.00
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.74 mm8.72 mm2.51 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG803651149
Side View
Table 59.0%Crown 34.9°Girdle: MED-STKPavilion 41.1°Culet: NoneDepth 61.4%

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 2
Current: €1,697 EUR|Low: €569 EUR|High: €1,718 EUR|Avg: €1,051 EUR
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 2, 2026
Retailer 5€569 EUR
Retailer 4€667 EUR
Retailer 2€860 EUR
Retailer 3€1,377 EUR
MOH London€1,697 EUR

20 data points across 5 retailers

5 retailers€569 EUR to €1,697 EUR

A
Cheapest Retailer
-
€569 EUR
$638 USD
B+
Retailer 2
-
€667 EUR
$748 USD
View
B+
Retailer 3
-
€860 EUR
View
B
Retailer 4
-
€1,377 EUR
$1,545 USD
View
Most Expensive
B
MOH London
LG803651149 · Nov 1
€1,697 EUR
£1,499 GBP
View
4 more retailers have this diamond
Prices start from €569 EURSave up to €1,128 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
2.51ct Round
€569 EUR