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Cushion|Lab Grown|IGI

4.09ct E IF Cushion Lab Grown Diamond

ID • E/IF • IGI LG665410165

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG665410165

Diamond specifications and retailer prices

From $13,780 AUD
$9,680 USD
As of October 29, 2026
3 retailers carry this diamond
Most expensive: $17,609 AUD at Novita Diamonds · As of July 4, 2026
View at Novita Diamonds

About this 4.09ct lab-grown cushion diamond

This 4.09ct lab-grown cushion sits in the three to five carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG665410165 or 665410165. Listed at 3 retailers as of October 29, 2026. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

4.09
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle36.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG665410165
Dimensions10.52 × 8.77 × 5.74 mm
L/W Ratio1.20
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
10.52 mm8.77 mm4.09 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG665410165
Side View
Table 58.0%Crown 36°Girdle: MED-STKPavilion 36.3°Culet: NoneDepth 65.5%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: $17,609 AUD|Low: $3,612 AUD|High: $45,683 AUD|Avg: $15,136 AUD|-9.2%
Novita Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
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Retailer 16
August 18, 2026
Retailer 16$3,612 AUD
Retailer 14$5,467 AUD
Retailer 3$6,200 AUD
Retailer 11$6,426 AUD
Retailer 10$7,058 AUD
Retailer 5$7,252 AUD
Retailer 2$8,223 AUD
Retailer 9$8,638 AUD
Retailer 15$9,203 AUD
Retailer 7$11,369 AUD
Retailer 12$13,780 AUD
Retailer 13$14,425 AUD
Novita Diamonds$17,609 AUD
Retailer 8$20,277 AUD
Retailer 6$20,349 AUD
Retailer 4$31,077 AUD

72 data points across 16 retailers

3 retailers

Retailer 1
-
$8,638 AUD
$6,067 USD
Price last confirmed 74 days ago
B+
Retailer 2
-
$13,780 AUD
$9,680 USD
View
Most Expensive
Novita Diamonds
cert_665410165 · Jul 4
$17,609 AUD
View
Price last confirmed 119 days ago
2 more retailers have this diamond
Prices start from $13,780 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.

B+
4.09ct Cushion
$13,780 AUD