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Cushion|Lab Grown|IGI

4.25ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG780665784

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG780665784

Diamond specifications and retailer prices

From $7,074 NZD
$3,987 USD
As of October 30, 2026
Save $36,964 NZD (84%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $44,038 NZD at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

About this 4.25ct lab-grown cushion diamond

This 4.25ct 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 LG780665784 or 780665784. Listed at 11 retailers as of October 30, 2026, with prices from $7,074 to $44,038, a $36,964 spread on the same certified stone. Do Amore Diamonds lists it at $44,038. 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

4.25
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.8°
Pavilion angle34.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG780665784
Dimensions11.12 × 8.53 × 5.66 mm
L/W Ratio1.30
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
11.12 mm8.53 mm4.25 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG780665784
Side View
Table 60.0%Crown 33.8°Girdle: STK-THKPavilion 34.8°Culet: NoneDepth 66.4%

Caratlytics Score

How it works →
A+
Exceptional
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $44,038 NZD|Low: $7,074 NZD|High: $58,303 NZD|Avg: $19,760 NZD|-24.5%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 31, 2026
Retailer 4$7,074 NZD
Retailer 7$7,417 NZD
Retailer 6$8,330 NZD
Retailer 11$10,073 NZD
Retailer 10$11,973 NZD
Retailer 2$14,025 NZD
Retailer 3$15,103 NZD
Retailer 8$17,653 NZD
Retailer 9$20,369 NZD
Retailer 5$23,368 NZD
Do Amore Diamonds$44,038 NZD

29 data points across 11 retailers

11 retailers$7,074 NZD to $44,038 NZD

A+
Cheapest Retailer
-
$7,074 NZD
$3,987 USD
A
Retailer 2
-
$7,417 NZD
$4,180 USD
View
A
Retailer 3
-
$8,330 NZD
$4,695 USD
View
A
Retailer 4
-
$10,073 NZD
$5,677 USD
View
Final sale: no returns
A
Retailer 5
-
$11,973 NZD
$6,748 USD
View
A
Retailer 6
-
$14,025 NZD
€7,528 EUR
View
Retailer 7
-
$15,103 NZD
$8,512 USD
View
Price last confirmed 83 days ago
B+
Retailer 8
-
$17,653 NZD
£7,834 GBP
View
B+
Retailer 9
-
$20,369 NZD
$11,480 USD
View
B+
Retailer 10
-
$23,368 NZD
$13,170 USD
View
Most Expensive
B
Do Amore Diamonds
27-3F57FA657 · Oct 31
$44,038 NZD
$24,820 USD
View
10 more retailers have this diamond
Prices start from $7,074 NZDSave up to $36,964 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+
4.25ct Cushion
$7,074 NZD