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Cushion|Lab Grown|IGI

3.96ct G SI1 Cushion Lab Grown Diamond

ID • G/SI1 • IGI LG644487438

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG644487438

Diamond specifications and retailer prices

From €604 EUR
$675 USD
As of October 31, 2026
Save €1,848 EUR (75%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: €2,453 EUR at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 3.96ct lab-grown cushion diamond

This 3.96ct lab-grown cushion sits in the three to five carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG644487438 or 644487438. Listed at 10 retailers as of October 31, 2026, with prices from €604 to €2,453, a €1,848 spread on the same certified stone. Brilliant Earth lists it at €2,453. 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

3.96
Carat
G
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle27.4°
Pavilion angle41.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG644487438
Dimensions10.96 × 8.43 × 5.61 mm
L/W Ratio1.30
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.96 mm8.43 mm3.96 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG644487438
Side View
Table 66.0%Crown 27.4°Girdle: STK-THKPavilion 41.8°Culet: NoneDepth 66.5%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 31
Current: €2,453 EUR|Low: €475 EUR|High: €4,619 EUR|Avg: €1,232 EUR|-46.9%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 1, 2026
Retailer 7€475 EUR
Retailer 6€548 EUR
Retailer 4€604 EUR
Retailer 8€749 EUR
Retailer 3€783 EUR
Retailer 2€785 EUR
Retailer 9€845 EUR
Retailer 10€1,613 EUR
Retailer 5€1,756 EUR
Brilliant Earth€2,453 EUR

36 data points across 10 retailers

10 retailers€604 EUR to €2,453 EUR

Retailer 1
-
€475 EUR
$531 USD
Price last confirmed 19 days ago
Retailer 2
-
€548 EUR
£482 GBP
View
Price last confirmed 15 days ago
A
Retailer 3
-
€604 EUR
$675 USD
View
B+
Retailer 4
-
€749 EUR
$837 USD
View
A
Retailer 5
-
€783 EUR
View
A
Retailer 6
-
€785 EUR
£690 GBP
View
A
Retailer 7
-
€845 EUR
$944 USD
View
B+
Retailer 8
-
€1,613 EUR
$1,802 USD
View
B+
Retailer 9
-
€1,756 EUR
£1,545 GBP
View
Most Expensive
B
Brilliant Earth
11882319A · Oct 31
€2,453 EUR
$2,740 USD
View
9 more retailers have this diamond
Prices start from €604 EURSave up to €1,848 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
3.96ct Cushion
€604 EUR