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Cushion|Lab Grown|IGI

4.10ct D IF Cushion Lab Grown Diamond

EX • D/IF • IGI LG720556118

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG720556118

Diamond specifications and retailer prices

From $4,390 AUD
$3,084 USD
As of October 31, 2026
Save $22,587 AUD (84%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $27,874 AUD at Brilliant Earth · As of October 24, 2026
View at Brilliant Earth

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 IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG720556118 or 720556118. Listed at 21 retailers as of October 31, 2026, with a 514% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.9°
Pavilion angle35.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG720556118
Dimensions10.53 × 8.80 × 5.68 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
10.53 mm8.80 mm4.10 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG720556118
Side View
Table 60.0%Crown 36.9°Girdle: MED-STKPavilion 35.6°Culet: NoneDepth 64.5%

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: Oct 31
Current: $16,443 AUD|Low: $4,390 AUD|High: $28,728 AUD|Avg: $11,526 AUD|-41.0%
Brilliant Earth
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
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
October 31, 2026
Retailer 3$4,390 AUD
Retailer 16$4,618 AUD
Retailer 15$4,776 AUD
Retailer 18$5,867 AUD
Retailer 19$5,922 AUD
Retailer 11$5,946 AUD
Retailer 12$6,730 AUD
Retailer 6$7,800 AUD
Retailer 8$8,657 AUD
Retailer 2$9,305 AUD
Retailer 13$10,686 AUD
Retailer 7$10,775 AUD
Retailer 9$12,130 AUD
Retailer 4$12,526 AUD
Retailer 14$12,795 AUD
Brilliant Earth$16,443 AUD
Retailer 5$17,148 AUD
Retailer 10$17,486 AUD
Retailer 17$26,977 AUD

36 data points across 19 retailers

21 retailers$4,390 AUD to $26,977 AUD

A
Cheapest Retailer
-
$4,390 AUD
$3,084 USD
Final sale: no returns
A
Retailer 2
-
$4,618 AUD
$3,244 USD
View
A
Retailer 3
-
$4,776 AUD
$3,355 USD
View
A
Retailer 4
-
$5,867 AUD
$4,121 USD
View
A
Retailer 5
-
$5,922 AUD
HK$32,500 HKD
View
Retailer 6
-
$5,946 AUD
$4,177 USD
View
Price last confirmed 19 days ago
A
Retailer 7
-
$6,730 AUD
£3,722 GBP
View
Retailer 8
-
$7,800 AUD
$5,479 USD
View
Price last confirmed 8 days ago
A
Retailer 9
-
$8,657 AUD
£4,788 GBP
View
A
Retailer 10
-
$9,305 AUD
€6,225 EUR
View
A
Retailer 11
-
$10,686 AUD
ZAR 121,270 ZAR
View
Retailer 12
-
$10,775 AUD
View
Price last confirmed 9 days ago
A
Retailer 13
-
$12,130 AUD
$8,521 USD
View
B+
Retailer 14
-
$12,526 AUD
$8,799 USD
View
B+
Retailer 15
-
$12,795 AUD
£7,077 GBP
View
Retailer 16
-
$13,108 AUD
£7,250 GBP
View
Price last confirmed 22 days ago
B+
Retailer 17
-
$16,443 AUD
$11,550 USD
View
B+
Retailer 18
-
$17,148 AUD
SGD 16,278 SGD
View
B+
Retailer 19
-
$17,486 AUD
$12,283 USD
View
B
Retailer 20
-
$26,977 AUD
$18,950 USD
View
Most Expensive
Brilliant Earth
14890425A · Oct 24
$27,874 AUD
$19,580 USD
View
Price last confirmed 7 days ago
20 more retailers have this diamond
Prices start from $4,390 AUDSave up to $22,587 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
$4,390 AUD