Radiant|Lab Grown|IGI

5.11ct F SI1 Radiant Lab Grown Diamond

EX • F/SI1 • IGI LG650411451

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

Certificate IGI LG650411451

Diamond specifications and retailer prices

From €1,030 EUR
$1,155 USD
As of October 31, 2026
Save €981 EUR (49%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: €2,459 EUR at NZ Jewellers · As of September 30, 2026
View at NZ Jewellers

About this 5.11ct lab-grown radiant diamond

This 5.11ct lab-grown radiant sits in the over five carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG650411451 or 650411451. Listed at 5 retailers as of October 31, 2026, with a 95% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

5.11
Carat
F
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle47.1°
Pavilion angle34.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG650411451
Dimensions11.64 × 8.71 × 5.66 mm
L/W Ratio1.34
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.64 mm8.71 mm5.11 ctF / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG650411451
Side View
Table 66.0%Crown 47.1°Girdle: MED-STKPavilion 34.3°Culet: NoneDepth 65.0%

Caratlytics Score

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B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: €1,030 EUR|Low: €603 EUR|High: €3,318 EUR|Avg: €1,662 EUR|-47.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 31, 2026
Retailer 5€820 EUR
Retailer 6€844 EUR
Retailer 8€991 EUR
Retailer 1€1,030 EUR
Retailer 3€1,406 EUR
Retailer 9€1,484 EUR
Retailer 2€2,011 EUR
Retailer 7€2,128 EUR
Retailer 4€3,318 EUR

6 data points across 9 retailers

5 retailers€1,030 EUR to €2,011 EUR

Retailer 1
-
€724 EUR
$812 USD
Price last confirmed 31 days ago
B+
Retailer 2
-
€1,030 EUR
$1,155 USD
View
B
Retailer 3
-
€1,406 EUR
$1,577 USD
View
B
Retailer 4
-
€2,011 EUR
$2,255 USD
View
Most Expensive
NZ Jewellers
91bb40b9-a025-4aa5-8f4e-484542b6abbe · Sep 30
€2,459 EUR
$2,758 USD
View
Price last confirmed 32 days ago
4 more retailers have this diamond
Prices start from €1,030 EURSave up to €981 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.

B+
5.11ct Radiant
€1,030 EUR