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Cushion|Lab Grown|IGI

3.20ct F SI1 Cushion Lab Grown Diamond

ID • F/SI1 • IGI LG685590243

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG685590243

Diamond specifications and retailer prices

From $486 USD
As of November 6, 2026
Save $2,129 USD (81%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $2,615 USD at Rare Carat · As of November 1, 2026
View at Rare Carat

About this 3.2ct lab-grown cushion diamond

This 3.2ct 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 LG685590243 or 685590243. Listed at 10 retailers as of November 1, 2026, with prices from $486 to $2,615, a $2,129 spread on the same certified stone. Rare Carat lists it at $2,615. 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

3.20
Carat
F
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.4°
Pavilion angle39.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG685590243
Dimensions8.78 × 8.63 × 5.60 mm
L/W Ratio1.02
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.78 mm8.63 mm3.20 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG685590243
Side View
Table 64.0%Crown 37.4°Girdle: MED-STKPavilion 39.2°Culet: NoneDepth 64.9%

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 6
Current: $2,615 USD|Low: $486 USD|High: $5,200 USD|Avg: $1,620 USD
Rare Carat
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 10$486 USD
Retailer 5$526 USD
Retailer 8$585 USD
Retailer 12$695 USD
Retailer 2$699 USD
Retailer 9$755 USD
Retailer 6$769 USD
Retailer 11$1,106 USD
Retailer 7$1,684 USD
Rare Carat$2,615 USD
Retailer 3$4,037 USD
Retailer 4$5,200 USD

10 data points across 12 retailers

10 retailers$486 USD to $2,615 USD

A
Cheapest Retailer
-
$486 USD
A
Retailer 2
-
$526 USD
View
A
Retailer 3
-
$585 USD
View
B+
Retailer 4
-
$695 USD
View
A
Retailer 5
-
$699 USD
View
A
Retailer 6
-
$755 USD
View
A
Retailer 7
-
$769 USD
View
A
Retailer 8
-
$1,106 USD
View
B+
Retailer 9
-
$1,684 USD
View
Most Expensive
B
Rare Carat
KI2435902KF685 · Nov 1
$2,615 USD
View
9 more retailers have this diamond
Prices start from $486 USDSave up to $2,129 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
3.20ct Cushion
$486 USD