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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 $6,103 AUD
£3,376 GBP
As of October 30, 2026
Save $31,728 AUD (84%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $37,831 AUD 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 $6,103 to $37,831, a $31,728 spread on the same certified stone. With Clarity lists it at $37,831. 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: $18,792 AUD|Low: $5,720 AUD|High: $42,035 AUD|Avg: $14,872 AUD|-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$6,103 AUD
Retailer 4$7,367 AUD
Retailer 2$9,111 AUD
Retailer 8$10,863 AUD
Retailer 3$13,241 AUD
Retailer 5$13,368 AUD
Retailer 7$14,216 AUD
Retailer 1$18,792 AUD
With Clarity$37,831 AUD

7 data points across 9 retailers

9 retailers$6,103 AUD to $37,831 AUD

A
Cheapest Retailer
-
$6,103 AUD
£3,376 GBP
A
Retailer 2
-
$7,367 AUD
$5,175 USD
View
A
Retailer 3
-
$9,111 AUD
$6,400 USD
View
A
Retailer 4
-
$10,863 AUD
$7,631 USD
View
A
Retailer 5
-
$13,241 AUD
€8,858 EUR
View
B+
Retailer 6
-
$13,368 AUD
$9,390 USD
View
B+
Retailer 7
-
$14,216 AUD
£7,863 GBP
View
B+
Retailer 8
-
$18,792 AUD
$13,200 USD
View
Most Expensive
B
With Clarity
846658009 · Oct 31
$37,831 AUD
$26,574 USD
View
8 more retailers have this diamond
Prices start from $6,103 AUDSave up to $31,728 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
4.26ct Cushion
$6,103 AUD