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Cushion|Lab Grown|IGI

4.29ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG821641156

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG821641156

Diamond specifications and retailer prices

From €4,321 EUR
$4,828 USD
As of November 1, 2026
Save €13,818 EUR (76%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: €18,140 EUR at With Clarity · As of October 31, 2026
View at With Clarity

About this 4.29ct lab-grown cushion diamond

This 4.29ct 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 LG821641156 or 821641156. Listed at 11 retailers as of October 31, 2026, with prices from €4,321 to €18,140, a €13,818 spread on the same certified stone. With Clarity lists it at €18,140. 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

4.29
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.3°
Pavilion angle36.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG821641156
Dimensions10.98 × 8.67 × 5.69 mm
L/W Ratio1.27
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
10.98 mm8.67 mm4.29 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG821641156
Side View
Table 61.0%Crown 36.3°Girdle: MED-STKPavilion 36.4°Culet: NoneDepth 65.6%

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: Nov 1
Current: €9,478 EUR|Low: €4,321 EUR|High: €24,819 EUR|Avg: €11,356 EUR|-25.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
With Clarity
November 1, 2026
Retailer 7€4,321 EUR
Retailer 6€5,700 EUR
Retailer 10€5,717 EUR
Retailer 4€5,936 EUR
Retailer 3€7,025 EUR
Retailer 5€7,471 EUR
Retailer 1€9,478 EUR
Retailer 8€11,896 EUR
Retailer 2€13,179 EUR
Retailer 9€16,331 EUR
With Clarity€18,140 EUR

41 data points across 11 retailers

11 retailers€4,321 EUR to €18,140 EUR

A
Cheapest Retailer
-
€4,321 EUR
$4,828 USD
A
Retailer 2
-
€5,700 EUR
$6,368 USD
View
A
Retailer 3
-
€5,717 EUR
HK$49,900 HKD
View
A
Retailer 4
-
€5,936 EUR
£5,222 GBP
View
A
Retailer 5
-
€7,025 EUR
$7,848 USD
View
A
Retailer 6
-
€7,471 EUR
View
B+
Retailer 7
-
€9,478 EUR
£8,338 GBP
View
B+
Retailer 8
-
€11,896 EUR
$13,290 USD
View
B+
Retailer 9
-
€13,179 EUR
$14,723 USD
View
B+
Retailer 10
-
€16,331 EUR
$18,245 USD
View
Most Expensive
B
With Clarity
821641156 · Oct 31
€18,140 EUR
$20,266 USD
View
10 more retailers have this diamond
Prices start from €4,321 EURSave up to €13,818 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
4.29ct Cushion
€4,321 EUR