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Cushion|Lab Grown|IGI

4.01ct F SI1 Cushion Lab Grown Diamond

ID • F/SI1 • IGI LG581330008

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG581330008

Diamond specifications and retailer prices

From €507 EUR
$569 USD
As of November 1, 2026
Save €2,283 EUR (82%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: €2,791 EUR at Brilliant Earth · As of November 2, 2026
View at Brilliant Earth

About this 4.01ct lab-grown cushion diamond

This 4.01ct lab-grown cushion 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 LG581330008 or 581330008. Listed at 10 retailers as of November 1, 2026, with prices from €507 to €2,791, a €2,283 spread on the same certified stone. Brilliant Earth lists it at €2,791. 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

4.01
Carat
F
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.4°
Pavilion angle38.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG581330008
Dimensions9.30 × 9.14 × 6.00 mm
L/W Ratio1.02
Girdle conditionFaceted
Culet sizePointed
Top View
9.30 mm9.14 mm4.01 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG581330008
Side View
Table 63.0%Crown 36.4°Girdle: MED-STKPavilion 38.5°Culet: NoneDepth 65.6%

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: €2,791 EUR|Low: €432 EUR|High: €2,871 EUR|Avg: €1,131 EUR|-2.8%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 9€507 EUR
Retailer 6€562 EUR
Retailer 4€687 EUR
Retailer 3€778 EUR
Retailer 10€873 EUR
Retailer 7€916 EUR
Retailer 2€936 EUR
Retailer 8€1,023 EUR
Retailer 5€2,359 EUR
Brilliant Earth€2,791 EUR

35 data points across 10 retailers

10 retailers€507 EUR to €2,791 EUR

A
Cheapest Retailer
-
€507 EUR
$569 USD
Final sale: no returns
Retailer 2
-
€562 EUR
$630 USD
View
Price last confirmed 22 days ago
A
Retailer 3
-
€687 EUR
$770 USD
View
A
Retailer 4
-
€778 EUR
View
B+
Retailer 5
-
€873 EUR
$979 USD
View
A
Retailer 6
-
€916 EUR
$1,027 USD
View
B+
Retailer 7
-
€936 EUR
£827 GBP
View
A
Retailer 8
-
€1,023 EUR
$1,147 USD
View
B
Retailer 9
-
€2,359 EUR
£2,083 GBP
View
Most Expensive
B
Brilliant Earth
7631457A · Nov 2
€2,791 EUR
$3,130 USD
View
9 more retailers have this diamond
Prices start from €507 EURSave up to €2,283 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
4.01ct Cushion
€507 EUR