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Radiant|Lab Grown|IGI

2.51ct F SI1 Radiant Lab Grown Diamond

EX • F/SI1 • IGI LG654458476

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG654458476

Diamond specifications and retailer prices

From €382 EUR
$427 USD
As of October 30, 2026
Save €1,368 EUR (78%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: €1,751 EUR at MOH London · As of October 29, 2026
View at MOH London

About this 2.51ct lab-grown radiant diamond

This 2.51ct lab-grown radiant 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 LG654458476 or 654458476. Listed at 8 retailers as of October 29, 2026, with prices from €382 to €1,751, a €1,368 spread on the same certified stone. MOH London lists it at €1,751. 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

2.51
Carat
F
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.1°
Pavilion angle34.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG654458476
Dimensions9.17 × 6.93 × 4.53 mm
L/W Ratio1.32
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.17 mm6.93 mm2.51 ctF / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG654458476
Side View
Table 63.0%Crown 44.1°Girdle: MED-STKPavilion 34.9°Culet: NoneDepth 65.4%

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: Oct 30
Current: €1,751 EUR|Low: €306 EUR|High: €1,949 EUR|Avg: €1,111 EUR|+0.6%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 31, 2026
Retailer 6€382 EUR
Retailer 5€428 EUR
Retailer 10€428 EUR
Retailer 2€604 EUR
Retailer 9€747 EUR
Retailer 3€819 EUR
Retailer 11€1,127 EUR
Retailer 8€1,329 EUR
Retailer 7€1,523 EUR
Retailer 12€1,624 EUR
MOH London€1,751 EUR
Retailer 4€1,949 EUR

17 data points across 12 retailers

8 retailers€382 EUR to €1,751 EUR

A
Cheapest Retailer
-
€382 EUR
$427 USD
A
Retailer 2
-
€428 EUR
$478 USD
View
Final sale: no returns
A
Retailer 3
-
€428 EUR
$478 USD
View
A
Retailer 4
-
€604 EUR
$675 USD
View
A
Retailer 5
-
€747 EUR
$835 USD
View
B+
Retailer 6
-
€1,329 EUR
$1,485 USD
View
B
Retailer 7
-
€1,523 EUR
$1,702 USD
View
Most Expensive
B
MOH London
LG654458476 · Oct 29
€1,751 EUR
£1,540 GBP
View
7 more retailers have this diamond
Prices start from €382 EURSave up to €1,368 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 Radiant
€382 EUR