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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 $775 USD
As of November 2, 2026
Save $2,385 USD (75%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $3,160 USD at Brilliant Earth · As of October 31, 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 11 retailers as of October 31, 2026, with prices from $775 to $3,160, a $2,385 spread on the same certified stone. Brilliant Earth lists it at $3,160. 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
Color
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: $3,160 USD|Low: $473 USD|High: $3,270 USD|Avg: $1,432 USD|-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$553 USD
Retailer 8$638 USD
Retailer 6$775 USD
Retailer 5$882 USD
Retailer 2$988 USD
Retailer 11$988 USD
Retailer 9$1,035 USD
Retailer 10$1,173 USD
Retailer 4$2,662 USD
Retailer 3$3,022 USD
Brilliant Earth$3,160 USD

36 data points across 11 retailers

11 retailers$775 USD to $3,160 USD

Retailer 1
-
$553 USD
£435 GBP
Price last confirmed 16 days ago
Retailer 2
-
$638 USD
View
Price last confirmed 22 days ago
A
Retailer 3
-
$775 USD
View
A
Retailer 4
-
$882 USD
€840 EUR
View
A
Retailer 5
-
$988 USD
£778 GBP
View
B+
Retailer 6
-
$988 USD
View
A
Retailer 7
-
$1,035 USD
View
A
Retailer 8
-
$1,173 USD
View
B
Retailer 9
-
$2,662 USD
£2,096 GBP
View
B
Retailer 10
-
$3,022 USD
View
Most Expensive
B
Brilliant Earth
8988689A · Oct 31
$3,160 USD
View
10 more retailers have this diamond
Prices start from $775 USDSave up to $2,385 USD

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
$775 USD