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Cushion|Lab Grown|IGI

4.18ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG811627555

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG811627555

Diamond specifications and retailer prices

From $6,720 CAD
$4,811 USD
As of October 29, 2026
Save $18,690 CAD (74%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $25,411 CAD at Taylor and Hart · As of October 30, 2026
View at Taylor and Hart

About this 4.18ct lab-grown cushion diamond

This 4.18ct 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 LG811627555 or 811627555. Listed at 13 retailers as of October 29, 2026, with prices from $6,720 to $25,411, a $18,690 spread on the same certified stone. Taylor and Hart lists it at $25,411. 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

4.18
Carat
D
Color
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle31.3°
Pavilion angle29.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG811627555
Dimensions11.02 × 8.26 × 5.29 mm
L/W Ratio1.33
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
11.02 mm8.26 mm4.18 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG811627555
Side View
Table 63.0%Crown 31.3°Girdle: STK-VTKPavilion 29.1°Culet: NoneDepth 64.0%

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 29
Current: $9,237 CAD|Low: $5,797 CAD|High: $30,062 CAD|Avg: $13,198 CAD|-15.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Taylor and Hart
October 30, 2026
Retailer 12$6,720 CAD
Retailer 2$6,878 CAD
Retailer 4$7,124 CAD
Retailer 7$7,180 CAD
Retailer 8$8,546 CAD
Retailer 1$9,237 CAD
Retailer 3$10,027 CAD
Retailer 9$11,023 CAD
Retailer 11$13,328 CAD
Retailer 6$14,829 CAD
Retailer 5$15,161 CAD
Retailer 10$19,794 CAD
Taylor and Hart$25,411 CAD

43 data points across 13 retailers

13 retailers$6,720 CAD to $25,411 CAD

A
Cheapest Retailer
-
$6,720 CAD
$4,811 USD
A
Retailer 2
-
$6,878 CAD
$4,924 USD
View
Final sale: no returns
Retailer 3
-
$7,124 CAD
$5,100 USD
View
Price last confirmed 14 days ago
A
Retailer 4
-
$7,180 CAD
$5,140 USD
View
A
Retailer 5
-
$8,546 CAD
$6,118 USD
View
A
Retailer 6
-
$9,237 CAD
£5,207 GBP
View
A
Retailer 7
-
$10,027 CAD
£5,652 GBP
View
A
Retailer 8
-
$11,023 CAD
$7,891 USD
View
B+
Retailer 9
-
$13,328 CAD
$9,541 USD
View
B+
Retailer 10
-
$14,829 CAD
£8,359 GBP
View
B+
Retailer 11
-
$15,161 CAD
ZAR 175,337 ZAR
View
B+
Retailer 12
-
$19,794 CAD
$14,170 USD
View
Most Expensive
B
Taylor and Hart
5RC8QBX · Oct 30
$25,411 CAD
$18,191 USD
View
12 more retailers have this diamond
Prices start from $6,720 CADSave up to $18,690 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
4.18ct Cushion
$6,720 CAD