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Cushion|Lab Grown|IGI

4.10ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG768628605

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG768628605

Diamond specifications and retailer prices

From $6,028 AUD
$4,234 USD
As of November 1, 2026
Save $21,031 AUD (78%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $27,058 AUD at Blue Nile · As of October 31, 2026
View at Blue Nile

About this 4.1ct lab-grown cushion diamond

This 4.1ct lab-grown cushion sits in the three to five carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG768628605 or 768628605. Listed at 14 retailers as of October 31, 2026, with prices from $6,028 to $27,058, a $21,031 spread on the same certified stone. Blue Nile lists it at $27,058. 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

4.10
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.9°
Pavilion angle35.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG768628605
Dimensions10.39 × 8.74 × 5.77 mm
L/W Ratio1.19
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
10.39 mm8.74 mm4.10 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG768628605
Side View
Table 60.0%Crown 34.9°Girdle: MED-THKPavilion 35.9°Culet: NoneDepth 66.0%

Caratlytics Score

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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: $27,058 AUD|Low: $6,028 AUD|High: $30,778 AUD|Avg: $15,339 AUD|+48.2%
Blue Nile
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
November 1, 2026
Retailer 9$6,028 AUD
Retailer 8$6,191 AUD
Retailer 14$8,801 AUD
Retailer 2$9,025 AUD
Retailer 7$11,356 AUD
Retailer 5$11,417 AUD
Retailer 6$11,745 AUD
Retailer 13$14,841 AUD
Retailer 4$15,785 AUD
Retailer 10$16,006 AUD
Retailer 11$18,080 AUD
Retailer 3$20,032 AUD
Retailer 12$24,820 AUD
Blue Nile$27,058 AUD

36 data points across 14 retailers

14 retailers$6,028 AUD to $27,058 AUD

A
Cheapest Retailer
-
$6,028 AUD
$4,234 USD
A
Retailer 2
-
$6,191 AUD
$4,349 USD
View
A
Retailer 3
-
$8,801 AUD
HK$48,300 HKD
View
A
Retailer 4
-
$9,025 AUD
£4,992 GBP
View
A
Retailer 5
-
$11,356 AUD
€7,597 EUR
View
Retailer 6
-
$11,417 AUD
$8,020 USD
View
Price last confirmed 13 days ago
A
Retailer 7
-
$11,745 AUD
$8,250 USD
View
B+
Retailer 8
-
$14,841 AUD
ZAR 168,419 ZAR
View
B+
Retailer 9
-
$15,785 AUD
£8,731 GBP
View
B+
Retailer 10
-
$16,006 AUD
$11,243 USD
View
B+
Retailer 11
-
$18,080 AUD
$12,700 USD
View
B+
Retailer 12
-
$20,032 AUD
$14,071 USD
View
B
Retailer 13
-
$24,820 AUD
$17,435 USD
View
Most Expensive
B
Blue Nile
29313940 · Oct 31
$27,058 AUD
$19,007 USD
View
13 more retailers have this diamond
Prices start from $6,028 AUDSave up to $21,031 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
4.10ct Cushion
$6,028 AUD