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Cushion|Lab Grown|IGI

3.59ct F SI1 Cushion Lab Grown Diamond

ID • F/SI1 • IGI LG666413040

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG666413040

Diamond specifications and retailer prices

From $538 USD
HK$4,200 HKD
As of November 1, 2026
Save $2,207 USD (80%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $2,745 USD at Rare Carat · As of November 1, 2026
View at Rare Carat

About this 3.59ct lab-grown cushion diamond

This 3.59ct 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 LG666413040 or 666413040. Listed at 10 retailers as of November 1, 2026, with prices from $538 to $2,745, a $2,207 spread on the same certified stone. Rare Carat lists it at $2,745. 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

3.59
Carat
F
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.2°
Pavilion angle38.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG666413040
Dimensions10.90 × 8.16 × 5.47 mm
L/W Ratio1.34
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.90 mm8.16 mm3.59 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG666413040
Side View
Table 60.0%Crown 33.2°Girdle: MED-STKPavilion 38.2°Culet: NoneDepth 67.0%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $3,058 USD|Low: $538 USD|High: $4,541 USD|Avg: $1,717 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 2, 2026
Retailer 10$538 USD
Retailer 2$596 USD
Retailer 8$635 USD
Retailer 7$772 USD
Retailer 12$773 USD
Retailer 5$799 USD
Retailer 9$818 USD
Retailer 11$1,326 USD
Retailer 6$1,904 USD
Rare Carat$3,058 USD
Retailer 4$4,340 USD
Retailer 3$4,541 USD

6 data points across 12 retailers

10 retailers$538 USD to $2,745 USD

A
Cheapest Retailer
-
$538 USD
HK$4,200 HKD
A
Retailer 2
-
$596 USD
£470 GBP
View
A
Retailer 3
-
$635 USD
View
A
Retailer 4
-
$772 USD
€735 EUR
View
B+
Retailer 5
-
$773 USD
View
A
Retailer 6
-
$799 USD
£629 GBP
View
A
Retailer 7
-
$818 USD
View
A
Retailer 8
-
$1,326 USD
View
B+
Retailer 9
-
$1,904 USD
£1,499 GBP
View
Most Expensive
B
Rare Carat
KI0404130KF666 · Nov 1
$2,745 USD
View
9 more retailers have this diamond
Prices start from $538 USDSave up to $2,207 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
3.59ct Cushion
$538 USD