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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 €4,019 EUR
$4,490 USD
As of October 31, 2026
Save €18,994 EUR (83%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: €23,013 EUR at Do Amore Diamonds · As of October 31, 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 31, 2026, with prices from €4,019 to €23,013, a €18,994 spread on the same certified stone. Do Amore Diamonds lists it at €23,013. 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 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

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 31
Current: €23,013 EUR|Low: €3,961 EUR|High: €30,660 EUR|Avg: €12,237 EUR|-2.9%
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 6€4,019 EUR
Retailer 5€4,249 EUR
Retailer 8€4,480 EUR
Retailer 2€6,014 EUR
Retailer 3€7,347 EUR
Retailer 7€8,916 EUR
Retailer 9€9,338 EUR
Retailer 4€11,815 EUR
Do Amore Diamonds€23,013 EUR
Retailer 10€26,429 EUR

30 data points across 10 retailers

9 retailers€4,019 EUR to €23,013 EUR

A
Cheapest Retailer
-
€4,019 EUR
$4,490 USD
A
Retailer 2
-
€4,031 EUR
$4,504 USD
View
A
Retailer 3
-
€4,249 EUR
$4,747 USD
View
A
Retailer 4
-
€6,014 EUR
$6,719 USD
View
A
Retailer 5
-
€7,347 EUR
View
B+
Retailer 6
-
€8,916 EUR
£7,843 GBP
View
Retailer 7
-
€9,338 EUR
$10,432 USD
View
Price last confirmed 15 days ago
B+
Retailer 8
-
€11,815 EUR
$13,200 USD
View
Most Expensive
B
Do Amore Diamonds
27-1D4304903 · Oct 31
€23,013 EUR
$25,710 USD
View
8 more retailers have this diamond
Prices start from €4,019 EURSave up to €18,994 EUR

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
€4,019 EUR