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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 $6,744 CAD
$4,828 USD
As of October 30, 2026
Save $21,565 CAD (76%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $28,310 CAD at With Clarity · As of October 30, 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 30, 2026, with prices from $6,744 to $28,310, a $21,565 spread on the same certified stone. With Clarity lists it at $28,310. 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
Color
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: Oct 30
Current: $6,744 CAD|Low: $6,744 CAD|High: $38,733 CAD|Avg: $18,428 CAD|-21.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
With Clarity
October 30, 2026
Retailer 1$6,744 CAD
Retailer 6$8,922 CAD
Retailer 9$9,032 CAD
Retailer 4$9,264 CAD
Retailer 7$11,741 CAD
Retailer 2$12,055 CAD
Retailer 8$15,860 CAD
Retailer 3$18,565 CAD
Retailer 10$20,567 CAD
Retailer 5$25,487 CAD
With Clarity$28,310 CAD

40 data points across 11 retailers

11 retailers$6,744 CAD to $28,310 CAD

A
Cheapest Retailer
-
$6,744 CAD
$4,828 USD
A
Retailer 2
-
$8,922 CAD
HK$49,900 HKD
View
A
Retailer 3
-
$9,032 CAD
$6,466 USD
View
A
Retailer 4
-
$9,264 CAD
£5,222 GBP
View
A
Retailer 5
-
$11,741 CAD
€8,005 EUR
View
A
Retailer 6
-
$12,055 CAD
$8,630 USD
View
B+
Retailer 7
-
$15,860 CAD
£8,940 GBP
View
B+
Retailer 8
-
$18,565 CAD
$13,290 USD
View
B+
Retailer 9
-
$20,567 CAD
$14,723 USD
View
B+
Retailer 10
-
$25,487 CAD
$18,245 USD
View
Most Expensive
B
With Clarity
821641156 · Oct 30
$28,310 CAD
$20,266 USD
View
10 more retailers have this diamond
Prices start from $6,744 CADSave up to $21,565 CAD

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
$6,744 CAD