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 $4,287 USD
£3,376 GBP
As of October 30, 2026
Save $24,428 USD (85%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $28,715 USD at With Clarity · As of October 28, 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 28, 2026, with prices from $4,287 to $28,715, a $24,428 spread on the same certified stone. With Clarity lists it at $28,715. 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
Color
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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $4,287 USD|Low: $4,018 USD|High: $29,527 USD|Avg: $10,408 USD|+4.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
With Clarity
October 30, 2026
Retailer 1$4,287 USD
Retailer 3$4,850 USD
Retailer 5$6,450 USD
Retailer 7$7,631 USD
Retailer 2$9,367 USD
Retailer 4$9,986 USD
Retailer 6$10,145 USD
With Clarity$28,715 USD

6 data points across 8 retailers

9 retailers$4,287 USD to $28,715 USD

A
Cheapest Retailer
-
$4,287 USD
£3,376 GBP
A
Retailer 2
-
$4,850 USD
View
A
Retailer 3
-
$6,450 USD
View
A
Retailer 4
-
$7,631 USD
View
A
Retailer 5
-
$9,367 USD
€8,921 EUR
View
B+
Retailer 6
-
$9,986 USD
£7,863 GBP
View
B+
Retailer 7
-
$10,145 USD
View
B
Retailer 8
-
$22,370 USD
View
Most Expensive
B
With Clarity
846658009 · Oct 28
$28,715 USD
View
8 more retailers have this diamond
Prices start from $4,287 USDSave up to $24,428 USD

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
$4,287 USD