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Cushion|Lab Grown|IGI

4.28ct D FL Cushion Lab Grown Diamond

EX • D/FL • IGI LG754594736

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG754594736

Diamond specifications and retailer prices

From $7,140 CAD
$5,111 USD
As of October 29, 2026
Save $30,519 CAD (81%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $37,659 CAD at With Clarity · As of October 30, 2026
View at With Clarity

About this 4.28ct lab-grown cushion diamond

This 4.28ct 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 LG754594736 or 754594736. Listed at 14 retailers as of October 29, 2026, with prices from $7,140 to $37,659, a $30,519 spread on the same certified stone. With Clarity lists it at $37,659. 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

4.28
Carat
D
Color
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.4°
Pavilion angle37.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG754594736
Dimensions10.72 × 8.90 × 5.80 mm
L/W Ratio1.20
Girdle conditionFaceted
Culet sizePointed
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
10.72 mm8.90 mm4.28 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG754594736
Side View
Table 61.0%Crown 34.4°Girdle: STK-THKPavilion 37.1°Culet: NoneDepth 65.2%

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: $18,523 CAD|Low: $7,140 CAD|High: $47,138 CAD|Avg: $18,930 CAD|-41.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
With Clarity
October 30, 2026
Retailer 13$7,140 CAD
Retailer 10$8,904 CAD
Retailer 2$8,996 CAD
Retailer 7$9,243 CAD
Retailer 11$11,715 CAD
Retailer 5$12,027 CAD
Retailer 3$14,261 CAD
Retailer 9$15,170 CAD
Retailer 12$15,825 CAD
Retailer 1$18,523 CAD
Retailer 4$20,519 CAD
Retailer 8$25,427 CAD
Retailer 6$25,788 CAD
With Clarity$37,659 CAD

36 data points across 14 retailers

14 retailers$7,140 CAD to $37,659 CAD

A
Cheapest Retailer
-
$7,140 CAD
$5,111 USD
A
Retailer 2
-
$8,904 CAD
HK$49,800 HKD
View
A
Retailer 3
-
$8,996 CAD
$6,440 USD
View
A
Retailer 4
-
$9,243 CAD
£5,210 GBP
View
A
Retailer 5
-
$11,715 CAD
€7,987 EUR
View
B+
Retailer 6
-
$12,027 CAD
$8,610 USD
View
B+
Retailer 7
-
$14,261 CAD
$10,209 USD
View
B+
Retailer 8
-
$15,170 CAD
ZAR 175,446 ZAR
View
B+
Retailer 9
-
$15,825 CAD
£8,920 GBP
View
B+
Retailer 10
-
$18,523 CAD
$13,260 USD
View
B+
Retailer 11
-
$20,519 CAD
$14,689 USD
View
B+
Retailer 12
-
$25,427 CAD
$18,203 USD
View
B+
Retailer 13
-
$25,788 CAD
SGD 24,947 SGD
View
Most Expensive
B
With Clarity
754594736 · Oct 30
$37,659 CAD
$26,959 USD
View
13 more retailers have this diamond
Prices start from $7,140 CADSave up to $30,519 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
4.28ct Cushion
$7,140 CAD