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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 $675 USD
As of November 2, 2026
Save $2,065 USD (75%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $2,740 USD at Brilliant Earth · As of November 2, 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 9 retailers as of November 2, 2026, with prices from $675 to $2,740, a $2,065 spread on the same certified stone. Brilliant Earth lists it at $2,740. 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

How it works →
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: $2,740 USD|Low: $531 USD|High: $5,160 USD|Avg: $1,374 USD|-46.9%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 7$531 USD
Retailer 6$612 USD
Retailer 4$675 USD
Retailer 8$837 USD
Retailer 2$874 USD
Retailer 3$876 USD
Retailer 9$944 USD
Retailer 10$1,802 USD
Retailer 5$1,962 USD
Brilliant Earth$2,740 USD

36 data points across 10 retailers

9 retailers$675 USD to $2,740 USD

Retailer 1
-
$531 USD
Price last confirmed 21 days ago
A
Retailer 2
-
$675 USD
View
B+
Retailer 3
-
$837 USD
View
A
Retailer 4
-
$874 USD
€832 EUR
View
A
Retailer 5
-
$876 USD
£690 GBP
View
A
Retailer 6
-
$944 USD
View
B+
Retailer 7
-
$1,802 USD
View
B+
Retailer 8
-
$1,962 USD
£1,545 GBP
View
Most Expensive
B
Brilliant Earth
11882319A · Nov 2
$2,740 USD
View
8 more retailers have this diamond
Prices start from $675 USDSave up to $2,065 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
3.96ct Cushion
$675 USD