CaratHunter
Plans
Heart|Lab Grown|IGI

1.51ct D SI1 Heart Lab Grown Diamond

EX • D/SI1 • IGI LG650418911

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG650418911

Diamond specifications and retailer prices

From $302 CAD
As of November 6, 2026
Save $1,442 CAD (83%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $1,744 CAD at Brilliant Earth · As of November 6, 2026
View at Brilliant Earth

About this 1.51ct lab-grown heart diamond

This 1.51ct lab-grown heart sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG650418911 or 650418911. Listed at 14 retailers as of November 6, 2026, with prices from $302 to $1,744, a $1,442 spread on the same certified stone. Brilliant Earth lists it at $1,744. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.51
Carat
D
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.1°
Pavilion angle39°
OriginLab Grown
Grading LabIGI
CertificateIGI LG650418911
Dimensions6.97 × 8.10 × 4.63 mm
L/W Ratio1.16
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.97 mm8.10 mm1.51 ctD / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG650418911
Side View
Table 56.0%Crown 33.1°Girdle: MED-STKPavilion 39°Culet: NoneDepth 57.2%

Caratlytics Score

How it works →
A
Excellent
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 6
Current: $1,744 CAD|Low: $300 CAD|High: $2,813 CAD|Avg: $896 CAD|-38.0%
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 6, 2026
Retailer 4$302 CAD
Retailer 10$339 CAD
Retailer 12$350 CAD
Retailer 7$376 CAD
Retailer 11$506 CAD
Retailer 2$688 CAD
Retailer 3$699 CAD
Retailer 8$733 CAD
Retailer 9$1,205 CAD
Retailer 5$1,210 CAD
Retailer 6$1,502 CAD
Brilliant Earth$1,744 CAD

45 data points across 12 retailers

14 retailers$302 CAD to $1,744 CAD

A
Cheapest Retailer
-
$302 CAD
A
Retailer 2
-
$339 CAD
View
Final sale: no returns
A
Retailer 3
-
$350 CAD
View
A
Retailer 4
-
$376 CAD
View
Retailer 5
-
$387 CAD
View
Price last confirmed 12 days ago
B+
Retailer 6
-
$506 CAD
View
B+
Retailer 7
-
$688 CAD
View
B+
Retailer 8
-
$699 CAD
View
B+
Retailer 9
-
$733 CAD
View
B+
Retailer 10
-
$983 CAD
View
B
Retailer 11
-
$1,205 CAD
View
B
Retailer 12
-
$1,210 CAD
View
B
Retailer 13
-
$1,502 CAD
View
Most Expensive
B
Brilliant Earth
12166023A · Nov 6
$1,744 CAD
$1,240 USD
View
13 more retailers have this diamond
Prices start from $302 CADSave up to $1,442 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 Heart
$302 CAD