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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 $767 AUD
HK$4,200 HKD
As of November 1, 2026
Save $3,150 AUD (80%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $3,917 AUD 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 $767 to $3,917, a $3,150 spread on the same certified stone. Rare Carat lists it at $3,917. 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
Colour
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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $4,364 AUD|Low: $767 AUD|High: $6,479 AUD|Avg: $2,450 AUD
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$767 AUD
Retailer 2$851 AUD
Retailer 8$906 AUD
Retailer 7$1,101 AUD
Retailer 12$1,103 AUD
Retailer 5$1,140 AUD
Retailer 9$1,167 AUD
Retailer 11$1,892 AUD
Retailer 6$2,716 AUD
Rare Carat$4,364 AUD
Retailer 4$6,193 AUD
Retailer 3$6,479 AUD

6 data points across 12 retailers

10 retailers$767 AUD to $3,917 AUD

A
Cheapest Retailer
-
$767 AUD
HK$4,200 HKD
A
Retailer 2
-
$851 AUD
£470 GBP
View
A
Retailer 3
-
$906 AUD
$635 USD
View
A
Retailer 4
-
$1,101 AUD
€735 EUR
View
B+
Retailer 5
-
$1,103 AUD
$773 USD
View
A
Retailer 6
-
$1,140 AUD
£629 GBP
View
A
Retailer 7
-
$1,167 AUD
$818 USD
View
A
Retailer 8
-
$1,892 AUD
$1,326 USD
View
B+
Retailer 9
-
$2,716 AUD
£1,499 GBP
View
Most Expensive
B
Rare Carat
KI0404130KF666 · Nov 1
$3,917 AUD
$2,745 USD
View
9 more retailers have this diamond
Prices start from $767 AUDSave up to $3,150 AUD

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
$767 AUD