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Cushion|Lab Grown|IGI

5.18ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG846662161

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG846662161

Diamond specifications and retailer prices

From $10,921 CAD
$7,803 USD
As of October 29, 2026
Save $29,107 CAD (73%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $40,029 CAD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 5.18ct lab-grown cushion diamond

This 5.18ct lab-grown cushion sits in the over five carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG846662161 or 846662161. Listed at 10 retailers as of October 29, 2026, with prices from $10,921 to $40,029, a $29,107 spread on the same certified stone. Brilliant Earth lists it at $40,029. 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

5.18
Carat
D
Color
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.1°
Pavilion angle36.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG846662161
Dimensions12.69 × 8.97 × 5.95 mm
L/W Ratio1.41
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
12.69 mm8.97 mm5.18 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG846662161
Side View
Table 63.0%Crown 34.1°Girdle: MED-THKPavilion 36.4°Culet: NoneDepth 66.3%

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: $40,029 CAD|Low: $10,045 CAD|High: $74,120 CAD|Avg: $24,599 CAD
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 30, 2026
Retailer 6$10,921 CAD
Retailer 2$11,340 CAD
Retailer 4$12,330 CAD
Retailer 10$13,180 CAD
Retailer 8$15,471 CAD
Retailer 5$23,171 CAD
Retailer 3$23,873 CAD
Retailer 9$24,592 CAD
Brilliant Earth$40,029 CAD
Retailer 7$73,178 CAD

9 data points across 10 retailers

10 retailers$10,921 CAD to $40,029 CAD

A
Cheapest Retailer
-
$10,921 CAD
$7,803 USD
A
Retailer 2
-
$11,340 CAD
£6,380 GBP
View
A
Retailer 3
-
$12,330 CAD
$8,810 USD
View
A
Retailer 4
-
$13,180 CAD
$9,417 USD
View
A
Retailer 5
-
$15,471 CAD
$11,054 USD
View
B+
Retailer 6
-
$23,171 CAD
£13,036 GBP
View
B+
Retailer 7
-
$23,873 CAD
€16,245 EUR
View
B+
Retailer 8
-
$24,592 CAD
$17,571 USD
View
Most Expensive
B
Brilliant Earth
22254736A · Oct 29
$40,029 CAD
$28,600 USD
View
8 more retailers have this diamond
Prices start from $10,921 CADSave up to $29,107 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
5.18ct Cushion
$10,921 CAD