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Heart|Lab Grown|IGI

1.57ct E SI1 Heart Lab Grown Diamond

EX • E/SI1 • IGI LG656489091

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG656489091

Diamond specifications and retailer prices

From $309 CAD
$221 USD
As of October 27, 2026
Save $1,258 CAD (80%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $1,568 CAD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.57ct lab-grown heart diamond

This 1.57ct lab-grown heart sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG656489091 or 656489091. Listed at 15 retailers as of October 27, 2026, with prices from $309 to $1,568, a $1,258 spread on the same certified stone. Brilliant Earth lists it at $1,568. 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

1.57
Carat
E
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.4°
Pavilion angle39.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG656489091
Dimensions7.30 × 8.05 × 4.56 mm
L/W Ratio1.10
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.30 mm8.05 mm1.57 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG656489091
Side View
Table 62.0%Crown 37.4°Girdle: MED-THKPavilion 39.2°Culet: NoneDepth 56.6%

Caratlytics Score

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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 27
Current: $1,568 CAD|Low: $307 CAD|High: $1,605 CAD|Avg: $730 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
Retailer 13
Retailer 14
Retailer 15
October 29, 2026
Retailer 4$309 CAD
Retailer 5$346 CAD
Retailer 15$358 CAD
Retailer 8$383 CAD
Retailer 7$396 CAD
Retailer 11$493 CAD
Retailer 14$515 CAD
Retailer 9$644 CAD
Retailer 3$689 CAD
Retailer 2$713 CAD
Retailer 12$742 CAD
Retailer 6$1,029 CAD
Retailer 13$1,232 CAD
Retailer 10$1,543 CAD
Brilliant Earth$1,568 CAD

39 data points across 15 retailers

15 retailers$309 CAD to $1,568 CAD

A
Cheapest Retailer
-
$309 CAD
$221 USD
A
Retailer 2
-
$346 CAD
$247 USD
View
Final sale: no returns
A
Retailer 3
-
$358 CAD
$256 USD
View
A
Retailer 4
-
$383 CAD
$274 USD
View
A
Retailer 5
-
$396 CAD
$283 USD
View
A
Retailer 6
-
$493 CAD
£278 GBP
View
B+
Retailer 7
-
$515 CAD
$368 USD
View
A
Retailer 8
-
$644 CAD
€438 EUR
View
B+
Retailer 9
-
$689 CAD
$492 USD
View
B+
Retailer 10
-
$713 CAD
£401 GBP
View
B+
Retailer 11
-
$742 CAD
$530 USD
View
B
Retailer 12
-
$1,029 CAD
$735 USD
View
B
Retailer 13
-
$1,232 CAD
$880 USD
View
B
Retailer 14
-
$1,543 CAD
£868 GBP
View
Most Expensive
B
Brilliant Earth
13055813A · Oct 29
$1,568 CAD
$1,120 USD
View
14 more retailers have this diamond
Prices start from $309 CADSave up to $1,258 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
1.57ct Heart
$309 CAD