CaratHunter
Plans
Cushion|Lab Grown|IGI

1.51ct D IF Cushion Lab Grown Diamond

ID • D/IF • IGI LG843667687

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG843667687

Diamond specifications and retailer prices

From $731 CAD
£412 GBP
As of November 2, 2026
Save $3,755 CAD (84%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $6,135 CAD at Brilliant Earth · As of October 15, 2026
View at Brilliant Earth

About this 1.51ct lab-grown cushion diamond

This 1.51ct lab-grown cushion sits in the one-and-a-half to two carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG843667687 or 843667687. Listed at 13 retailers as of November 2, 2026, with a 514% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
D
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.2°
Pavilion angle32.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG843667687
Dimensions8.82 × 5.59 × 3.79 mm
L/W Ratio1.58
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
8.82 mm5.59 mm1.51 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG843667687
Side View
Table 58.0%Crown 33.2°Girdle: STK-VTKPavilion 32.1°Culet: NoneDepth 67.8%

Caratlytics Score

How it works →
A+
Exceptional
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: Nov 2
Current: $3,955 CAD|Low: $731 CAD|High: $5,548 CAD|Avg: $2,237 CAD
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 2$731 CAD
Retailer 9$901 CAD
Retailer 11$1,002 CAD
Retailer 5$1,128 CAD
Retailer 12$1,144 CAD
Retailer 7$1,610 CAD
Retailer 8$2,715 CAD
Retailer 4$3,143 CAD
Retailer 6$3,387 CAD
Retailer 3$3,514 CAD
Brilliant Earth$3,955 CAD
Retailer 10$4,486 CAD

19 data points across 12 retailers

13 retailers$731 CAD to $4,486 CAD

A+
Cheapest Retailer
-
$731 CAD
£412 GBP
A
Retailer 2
-
$901 CAD
$645 USD
View
A
Retailer 3
-
$1,002 CAD
$717 USD
View
A
Retailer 4
-
$1,128 CAD
€769 EUR
View
A
Retailer 5
-
$1,144 CAD
$819 USD
View
A
Retailer 6
-
$1,610 CAD
A$1,773 AUD
View
B+
Retailer 7
-
$2,715 CAD
£1,530 GBP
View
Retailer 8
-
$3,143 CAD
$2,249 USD
View
Price last confirmed 18 days ago
B
Retailer 9
-
$3,387 CAD
A$3,729 AUD
View
Retailer 10
-
$3,514 CAD
$2,515 USD
View
Price last confirmed 15 days ago
B+
Retailer 11
-
$3,955 CAD
$2,830 USD
View
B
Retailer 12
-
$4,486 CAD
$3,210 USD
View
Most Expensive
Brilliant Earth
21768659A · Oct 15
$6,135 CAD
$4,390 USD
View
Price last confirmed 18 days ago
12 more retailers have this diamond
Prices start from $731 CADSave up to $3,755 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+
1.51ct Cushion
$731 CAD