Cushion|Lab Grown|IGI

4.26ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG821638856

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG821638856

Diamond specifications and retailer prices

From $4,490 USD
As of October 29, 2026
Save $21,220 USD (83%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $25,710 USD at Do Amore Diamonds · As of October 30, 2026
View at Do Amore Diamonds

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 LG821638856 or 821638856. Listed at 9 retailers as of October 29, 2026, with prices from $4,490 to $25,710, a $21,220 spread on the same certified stone. Do Amore Diamonds lists it at $25,710. 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 angle34.9°
Pavilion angle36.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG821638856
Dimensions10.53 × 8.69 × 5.90 mm
L/W Ratio1.21
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
10.53 mm8.69 mm4.26 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG821638856
Side View
Table 59.0%Crown 34.9°Girdle: STK-THKPavilion 36.3°Culet: NoneDepth 67.9%

Caratlytics Score

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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 29
Current: $25,710 USD|Low: $4,425 USD|High: $34,253 USD|Avg: $13,836 USD|-2.9%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 30, 2026
Retailer 5$4,490 USD
Retailer 3$4,747 USD
Retailer 7$5,005 USD
Retailer 8$6,764 USD
Retailer 4$8,266 USD
Retailer 6$9,961 USD
Retailer 9$10,432 USD
Retailer 2$13,200 USD
Do Amore Diamonds$25,710 USD
Retailer 10$29,527 USD

28 data points across 10 retailers

9 retailers$4,490 USD to $25,710 USD

A
Cheapest Retailer
-
$4,490 USD
A
Retailer 2
-
$4,504 USD
View
A
Retailer 3
-
$4,747 USD
View
A
Retailer 4
-
$6,764 USD
View
A
Retailer 5
-
$8,266 USD
€7,872 EUR
View
B+
Retailer 6
-
$9,961 USD
£7,843 GBP
View
Retailer 7
-
$10,432 USD
View
Price last confirmed 13 days ago
B+
Retailer 8
-
$13,200 USD
View
Most Expensive
B
Do Amore Diamonds
27-1D4304903 · Oct 30
$25,710 USD
View
8 more retailers have this diamond
Prices start from $4,490 USDSave up to $21,220 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
$4,490 USD