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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 $5,472 NZD
$3,084 USD
As of October 31, 2026
Save $28,151 NZD (84%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $34,741 NZD 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: $20,493 NZD|Low: $5,472 NZD|High: $35,805 NZD|Avg: $14,366 NZD|-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$5,472 NZD
Retailer 16$5,756 NZD
Retailer 15$5,953 NZD
Retailer 18$7,312 NZD
Retailer 19$7,381 NZD
Retailer 11$7,411 NZD
Retailer 12$8,388 NZD
Retailer 6$9,721 NZD
Retailer 8$10,789 NZD
Retailer 2$11,597 NZD
Retailer 13$13,319 NZD
Retailer 7$13,429 NZD
Retailer 9$15,119 NZD
Retailer 4$15,612 NZD
Retailer 14$15,947 NZD
Brilliant Earth$20,493 NZD
Retailer 5$21,373 NZD
Retailer 10$21,794 NZD
Retailer 17$33,623 NZD

36 data points across 19 retailers

21 retailers$5,472 NZD to $33,623 NZD

A
Cheapest Retailer
-
$5,472 NZD
$3,084 USD
Final sale: no returns
A
Retailer 2
-
$5,756 NZD
$3,244 USD
View
A
Retailer 3
-
$5,953 NZD
$3,355 USD
View
A
Retailer 4
-
$7,312 NZD
$4,121 USD
View
A
Retailer 5
-
$7,381 NZD
HK$32,500 HKD
View
Retailer 6
-
$7,411 NZD
$4,177 USD
View
Price last confirmed 19 days ago
A
Retailer 7
-
$8,388 NZD
£3,722 GBP
View
Retailer 8
-
$9,721 NZD
$5,479 USD
View
Price last confirmed 8 days ago
A
Retailer 9
-
$10,789 NZD
£4,788 GBP
View
A
Retailer 10
-
$11,597 NZD
€6,225 EUR
View
A
Retailer 11
-
$13,319 NZD
ZAR 121,270 ZAR
View
Retailer 12
-
$13,429 NZD
A$11,644 AUD
View
Price last confirmed 9 days ago
A
Retailer 13
-
$15,119 NZD
$8,521 USD
View
B+
Retailer 14
-
$15,612 NZD
$8,799 USD
View
B+
Retailer 15
-
$15,947 NZD
£7,077 GBP
View
Retailer 16
-
$16,337 NZD
£7,250 GBP
View
Price last confirmed 22 days ago
B+
Retailer 17
-
$20,493 NZD
$11,550 USD
View
B+
Retailer 18
-
$21,373 NZD
SGD 16,278 SGD
View
B+
Retailer 19
-
$21,794 NZD
$12,283 USD
View
B
Retailer 20
-
$33,623 NZD
$18,950 USD
View
Most Expensive
Brilliant Earth
14890425A · Oct 24
$34,741 NZD
$19,580 USD
View
Price last confirmed 7 days ago
20 more retailers have this diamond
Prices start from $5,472 NZDSave up to $28,151 NZD

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
$5,472 NZD