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Cushion|Lab Grown|IGI

4.31ct D FL Cushion Lab Grown Diamond

EX • D/FL • IGI LG830648621

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG830648621

Diamond specifications and retailer prices

From $8,157 CAD
$5,837 USD
As of November 2, 2026
Save $41,311 CAD (84%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $49,468 CAD at With Clarity · As of November 3, 2026
View at With Clarity

About this 4.31ct lab-grown cushion diamond

This 4.31ct 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 LG830648621 or 830648621. Listed at 20 retailers as of November 2, 2026, with prices from $8,157 to $49,468, a $41,311 spread on the same certified stone. With Clarity lists it at $49,468. 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

4.31
Carat
D
Color
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.3°
Pavilion angle39.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG830648621
Dimensions11.83 × 8.34 × 5.55 mm
L/W Ratio1.42
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
11.83 mm8.34 mm4.31 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG830648621
Side View
Table 60.0%Crown 35.3°Girdle: MED-STKPavilion 39.5°Culet: NoneDepth 66.5%

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: Nov 2
Current: $12,074 CAD|Low: $7,876 CAD|High: $48,479 CAD|Avg: $18,129 CAD|-2.3%
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
Retailer 14
With Clarity
November 3, 2026
Retailer 10$8,157 CAD
Retailer 13$9,733 CAD
Retailer 6$9,744 CAD
Retailer 2$9,838 CAD
Retailer 3$11,160 CAD
Retailer 1$12,074 CAD
Retailer 4$13,864 CAD
Retailer 7$15,276 CAD
Retailer 12$16,482 CAD
Retailer 8$19,806 CAD
Retailer 9$20,715 CAD
Retailer 11$21,783 CAD
Retailer 5$25,122 CAD
Retailer 14$28,645 CAD
With Clarity$48,479 CAD

43 data points across 15 retailers

20 retailers$8,157 CAD to $49,468 CAD

A
Cheapest Retailer
-
$8,157 CAD
$5,837 USD
A
Retailer 2
-
$9,066 CAD
View
A
Retailer 3
-
$9,719 CAD
$6,955 USD
View
Retailer 4
-
$9,733 CAD
$6,965 USD
View
Price last confirmed 17 days ago
A
Retailer 5
-
$9,744 CAD
$6,973 USD
View
A
Retailer 6
-
$9,838 CAD
$7,040 USD
View
A
Retailer 7
-
$11,160 CAD
$7,986 USD
View
Final sale: no returns
A
Retailer 8
-
$12,074 CAD
£6,804 GBP
View
B+
Retailer 9
-
$13,864 CAD
£7,812 GBP
View
B+
Retailer 10
-
$15,276 CAD
€10,411 EUR
View
B+
Retailer 11
-
$16,482 CAD
$11,795 USD
View
B+
Retailer 12
-
$19,806 CAD
£11,160 GBP
View
B+
Retailer 13
-
$20,715 CAD
ZAR 239,486 ZAR
View
B
Retailer 14
-
$21,783 CAD
$15,588 USD
View
Retailer 15
-
$25,122 CAD
$17,978 USD
View
Price last confirmed 7 days ago
B
Retailer 16
-
$26,260 CAD
$18,792 USD
View
B
Retailer 17
-
$27,078 CAD
$19,378 USD
View
B
Retailer 18
-
$28,645 CAD
$20,499 USD
View
B
Retailer 19
-
$33,960 CAD
$24,302 USD
View
Most Expensive
B
With Clarity
830648621 · Nov 3
$49,468 CAD
$35,400 USD
View
19 more retailers have this diamond
Prices start from $8,157 CADSave up to $41,311 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
4.31ct Cushion
$8,157 CAD