CaratHunter
Plans
Heart|Lab Grown|IGI

1.67ct E SI1 Heart Lab Grown Diamond

ID • E/SI1 • IGI LG642477401

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG642477401

Diamond specifications and retailer prices

From $339 CAD
$242 USD
As of October 30, 2026
Save $2,307 CAD (87%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $2,645 CAD at Brilliant Earth · As of October 12, 2026
View at Brilliant Earth

About this 1.67ct lab-grown heart diamond

This 1.67ct 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 LG642477401 or 642477401. Listed at 16 retailers as of October 28, 2026, with a 681% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.67
Carat
E
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.4°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG642477401
Dimensions8.14 × 6.99 × 5.08 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
8.14 mm6.99 mm1.67 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG642477401
Side View
Table 60.0%Crown 35.4°Girdle: STK-THKPavilion 41.1°Culet: NoneDepth 62.4%

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: Oct 30
Current: $2,645 CAD|Low: $326 CAD|High: $2,715 CAD|Avg: $867 CAD|-2.6%
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
Retailer 16
October 30, 2026
Retailer 16$339 CAD
Retailer 10$378 CAD
Retailer 14$393 CAD
Retailer 5$420 CAD
Retailer 6$420 CAD
Retailer 2$540 CAD
Retailer 15$567 CAD
Retailer 8$688 CAD
Retailer 7$794 CAD
Retailer 9$797 CAD
Retailer 11$835 CAD
Retailer 4$885 CAD
Retailer 13$1,052 CAD
Retailer 3$1,352 CAD
Retailer 12$1,694 CAD
Brilliant Earth$2,645 CAD

29 data points across 16 retailers

16 retailers$339 CAD to $2,645 CAD

A
Cheapest Retailer
-
$339 CAD
$242 USD
A
Retailer 2
-
$378 CAD
$270 USD
View
Final sale: no returns
A
Retailer 3
-
$393 CAD
$281 USD
View
A
Retailer 4
-
$420 CAD
$300 USD
View
A
Retailer 5
-
$420 CAD
$300 USD
View
A
Retailer 6
-
$540 CAD
£304 GBP
View
B+
Retailer 7
-
$567 CAD
$405 USD
View
Retailer 8
-
$794 CAD
$567 USD
View
Price last confirmed 13 days ago
B+
Retailer 9
-
$797 CAD
£449 GBP
View
B+
Retailer 10
-
$835 CAD
A$918 AUD
View
B+
Retailer 11
-
$885 CAD
$632 USD
View
B+
Retailer 12
-
$1,052 CAD
$752 USD
View
B
Retailer 13
-
$1,352 CAD
$966 USD
View
Retailer 14
-
$1,694 CAD
£953 GBP
View
Price last confirmed 9 days ago
B
Retailer 15
-
$2,645 CAD
$1,890 USD
View
Most Expensive
Brilliant Earth
14017756A · Oct 12
$2,645 CAD
$1,890 USD
View
Price last confirmed 17 days ago
15 more retailers have this diamond
Prices start from $339 CADSave up to $2,307 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
1.67ct Heart
$339 CAD