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Cushion|Lab Grown|IGI

4.06ct F SI1 Cushion Lab Grown Diamond

ID • F/SI1 • IGI LG617417790

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG617417790

Diamond specifications and retailer prices

From €691 EUR
$775 USD
As of November 2, 2026
Save €2,126 EUR (75%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: €2,817 EUR at Brilliant Earth · As of November 2, 2026
View at Brilliant Earth

About this 4.06ct lab-grown cushion diamond

This 4.06ct 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 LG617417790 or 617417790. Listed at 10 retailers as of November 2, 2026, with prices from €691 to €2,817, a €2,126 spread on the same certified stone. Brilliant Earth lists it at €2,817. 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

4.06
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.7°
Pavilion angle39.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG617417790
Dimensions9.33 × 9.25 × 6.05 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
9.33 mm9.25 mm4.06 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG617417790
Side View
Table 64.0%Crown 35.7°Girdle: MED-STKPavilion 39.1°Culet: NoneDepth 65.4%

Caratlytics Score

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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: €2,817 EUR|Low: €422 EUR|High: €2,915 EUR|Avg: €1,277 EUR|-3.4%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 7€493 EUR
Retailer 8€569 EUR
Retailer 6€691 EUR
Retailer 5€786 EUR
Retailer 2€881 EUR
Retailer 11€881 EUR
Retailer 9€923 EUR
Retailer 10€1,046 EUR
Retailer 4€2,373 EUR
Retailer 3€2,694 EUR
Brilliant Earth€2,817 EUR

36 data points across 11 retailers

10 retailers€691 EUR to €2,817 EUR

Retailer 1
-
€569 EUR
$638 USD
Price last confirmed 22 days ago
A
Retailer 2
-
€691 EUR
$775 USD
View
A
Retailer 3
-
€786 EUR
View
A
Retailer 4
-
€881 EUR
£778 GBP
View
B+
Retailer 5
-
€881 EUR
$988 USD
View
A
Retailer 6
-
€923 EUR
$1,035 USD
View
A
Retailer 7
-
€1,046 EUR
$1,173 USD
View
B
Retailer 8
-
€2,373 EUR
£2,096 GBP
View
B
Retailer 9
-
€2,694 EUR
$3,022 USD
View
Most Expensive
B
Brilliant Earth
8988689A · Nov 2
€2,817 EUR
$3,160 USD
View
9 more retailers have this diamond
Prices start from €691 EURSave up to €2,126 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
4.06ct Cushion
€691 EUR