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Cushion|Lab Grown|IGI

4.26ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG846658009

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG846658009

Diamond specifications and retailer prices

From $7,606 NZD
£3,376 GBP
As of October 30, 2026
Save $39,544 NZD (84%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $47,150 NZD at With Clarity · As of October 31, 2026
View at With Clarity

About this 4.26ct lab-grown cushion diamond

This 4.26ct 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 LG846658009 or 846658009. Listed at 9 retailers as of October 30, 2026, with prices from $7,606 to $47,150, a $39,544 spread on the same certified stone. With Clarity lists it at $47,150. 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

4.26
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.8°
Pavilion angle35.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG846658009
Dimensions10.34 × 8.63 × 5.83 mm
L/W Ratio1.20
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
10.34 mm8.63 mm4.26 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG846658009
Side View
Table 60.0%Crown 36.8°Girdle: STK-THKPavilion 35.3°Culet: NoneDepth 67.6%

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: Oct 30
Current: $23,421 NZD|Low: $7,129 NZD|High: $52,390 NZD|Avg: $18,535 NZD|-12.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
With Clarity
October 31, 2026
Retailer 6$7,606 NZD
Retailer 4$9,182 NZD
Retailer 2$11,356 NZD
Retailer 8$13,540 NZD
Retailer 3$16,503 NZD
Retailer 5$16,661 NZD
Retailer 7$17,718 NZD
Retailer 1$23,421 NZD
With Clarity$47,150 NZD

7 data points across 9 retailers

9 retailers$7,606 NZD to $47,150 NZD

A
Cheapest Retailer
-
$7,606 NZD
£3,376 GBP
A
Retailer 2
-
$9,182 NZD
$5,175 USD
View
A
Retailer 3
-
$11,356 NZD
$6,400 USD
View
A
Retailer 4
-
$13,540 NZD
$7,631 USD
View
A
Retailer 5
-
$16,503 NZD
€8,858 EUR
View
B+
Retailer 6
-
$16,661 NZD
$9,390 USD
View
B+
Retailer 7
-
$17,718 NZD
£7,863 GBP
View
B+
Retailer 8
-
$23,421 NZD
$13,200 USD
View
Most Expensive
B
With Clarity
846658009 · Oct 31
$47,150 NZD
$26,574 USD
View
8 more retailers have this diamond
Prices start from $7,606 NZDSave up to $39,544 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
4.26ct Cushion
$7,606 NZD