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Cushion|Lab Grown|IGI

4.28ct D FL Cushion Lab Grown Diamond

VG • D/FL • IGI LG804665090

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG804665090

Diamond specifications and retailer prices

From $7,237 NZD
$4,079 USD
As of November 1, 2026
Save $38,575 NZD (84%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $45,812 NZD at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

About this 4.28ct lab-grown cushion diamond

This 4.28ct lab-grown cushion sits in the three to five carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a very-good cut grade and certified by IGI LG804665090 or 804665090. Listed at 10 retailers as of October 31, 2026, with prices from $7,237 to $45,812, a $38,575 spread on the same certified stone. Do Amore Diamonds lists it at $45,812. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

4.28
Carat
D
Colour
FL
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.8°
Pavilion angle37.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG804665090
Dimensions9.41 × 9.32 × 6.23 mm
L/W Ratio1.01
Girdle conditionFaceted
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
9.41 mm9.32 mm4.28 ctD / FL
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG804665090
Side View
Table 64.0%Crown 38.8°Girdle: STK-THKPavilion 37.1°Culet: NoneDepth 66.8%

Caratlytics Score

How it works →
A
Excellent
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: Nov 1
Current: $45,812 NZD|Low: $7,237 NZD|High: $58,712 NZD|Avg: $19,636 NZD|-22.0%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 1, 2026
Retailer 5$7,237 NZD
Retailer 8$7,834 NZD
Retailer 7$8,494 NZD
Retailer 9$10,138 NZD
Retailer 3$11,973 NZD
Retailer 4$14,632 NZD
Retailer 10$15,201 NZD
Retailer 2$17,657 NZD
Retailer 6$23,527 NZD
Do Amore Diamonds$45,812 NZD

28 data points across 10 retailers

10 retailers$7,237 NZD to $45,812 NZD

A
Cheapest Retailer
-
$7,237 NZD
$4,079 USD
A
Retailer 2
-
$7,834 NZD
$4,415 USD
View
A
Retailer 3
-
$8,494 NZD
$4,787 USD
View
A
Retailer 4
-
$10,138 NZD
$5,714 USD
View
Final sale: no returns
A
Retailer 5
-
$11,973 NZD
$6,748 USD
View
A
Retailer 6
-
$14,632 NZD
€7,854 EUR
View
Retailer 7
-
$15,201 NZD
$8,567 USD
View
Price last confirmed 84 days ago
B+
Retailer 8
-
$17,657 NZD
£7,836 GBP
View
B+
Retailer 9
-
$23,527 NZD
$13,260 USD
View
Most Expensive
B
Do Amore Diamonds
27-29F68735D · Oct 31
$45,812 NZD
$25,820 USD
View
9 more retailers have this diamond
Prices start from $7,237 NZDSave up to $38,575 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
4.28ct Cushion
$7,237 NZD