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Radiant|Lab Grown|IGI

4.50ct F SI1 Radiant Lab Grown Diamond

ID • F/SI1 • IGI LG639440349

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

Certificate IGI LG639440349

Diamond specifications and retailer prices

From €563 EUR
$631 USD
As of November 1, 2026
Save €2,603 EUR (82%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: €3,165 EUR at Brilliant Earth · As of November 2, 2026
View at Brilliant Earth

About this 4.5ct lab-grown radiant diamond

This 4.5ct lab-grown radiant sits in the three to five carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG639440349 or 639440349. Listed at 7 retailers as of November 1, 2026, with prices from €563 to €3,165, a €2,603 spread on the same certified stone. Brilliant Earth lists it at €3,165. 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

4.50
Carat
F
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle46.3°
Pavilion angle33.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG639440349
Dimensions11.37 × 7.95 × 5.56 mm
L/W Ratio1.43
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.37 mm7.95 mm4.50 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG639440349
Side View
Table 67.0%Crown 46.3°Girdle: Slightly ThickPavilion 33.9°Culet: NoneDepth 69.9%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: €3,165 EUR|Low: €563 EUR|High: €6,152 EUR|Avg: €1,644 EUR|-48.6%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 7€563 EUR
Retailer 4€669 EUR
Retailer 3€798 EUR
Retailer 9€798 EUR
Retailer 8€900 EUR
Retailer 5€993 EUR
Retailer 10€1,191 EUR
Retailer 2€1,354 EUR
Retailer 11€1,930 EUR
Retailer 12€2,270 EUR
Retailer 6€2,724 EUR
Brilliant Earth€3,165 EUR

19 data points across 12 retailers

7 retailers€563 EUR to €3,165 EUR

A
Cheapest Retailer
-
€563 EUR
$631 USD
Final sale: no returns
B+
Retailer 2
-
€798 EUR
$895 USD
View
A
Retailer 3
-
€993 EUR
View
B+
Retailer 4
-
€1,354 EUR
$1,519 USD
View
B
Retailer 5
-
€1,993 EUR
£1,761 GBP
View
Retailer 6
-
€2,724 EUR
$3,055 USD
View
Price last confirmed 8 days ago
Most Expensive
B
Brilliant Earth
14107286A · Nov 2
€3,165 EUR
$3,550 USD
View
6 more retailers have this diamond
Prices start from €563 EURSave up to €2,603 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
4.50ct Radiant
€563 EUR