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Heart|Lab Grown|IGI

1.64ct G SI1 Heart Lab Grown Diamond

ID • G/SI1 • IGI LG659468439

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG659468439

Diamond specifications and retailer prices

From $312 CAD
As of November 6, 2026
Save $1,240 CAD (80%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $1,552 CAD at MOH London · As of November 2, 2026
View at MOH London

About this 1.64ct lab-grown heart diamond

This 1.64ct lab-grown heart sits in the one-and-a-half to two carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG659468439 or 659468439. Listed at 12 retailers as of November 2, 2026, with prices from $312 to $1,552, a $1,240 spread on the same certified stone. MOH London lists it at $1,552. 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

1.64
Carat
G
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle34.6°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG659468439
Dimensions7.35 × 8.28 × 4.77 mm
L/W Ratio1.13
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.35 mm8.28 mm1.64 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG659468439
Side View
Table 58.0%Crown 34.6°Girdle: MED-THKPavilion 40.2°Culet: NoneDepth 57.6%

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: Nov 6
Current: $1,552 CAD|Low: $300 CAD|High: $1,572 CAD|Avg: $738 CAD|-1.1%
MOH London
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 7$312 CAD
Retailer 11$363 CAD
Retailer 3$387 CAD
Retailer 8$387 CAD
Retailer 2$492 CAD
Retailer 10$663 CAD
Retailer 5$713 CAD
Retailer 4$751 CAD
Retailer 12$782 CAD
Retailer 9$1,246 CAD
Retailer 6$1,250 CAD
MOH London$1,552 CAD

46 data points across 12 retailers

12 retailers$312 CAD to $1,552 CAD

A
Cheapest Retailer
-
$312 CAD
A
Retailer 2
-
$363 CAD
View
A
Retailer 3
-
$387 CAD
View
Retailer 4
-
$387 CAD
View
Price last confirmed 12 days ago
A
Retailer 5
-
$492 CAD
View
B+
Retailer 6
-
$663 CAD
View
B+
Retailer 7
-
$713 CAD
View
B+
Retailer 8
-
$751 CAD
View
B+
Retailer 9
-
$782 CAD
View
B
Retailer 10
-
$1,246 CAD
View
B
Retailer 11
-
$1,250 CAD
View
Most Expensive
B
MOH London
LG659468439 · Nov 2
$1,552 CAD
£869 GBP
View
11 more retailers have this diamond
Prices start from $312 CADSave up to $1,240 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
1.64ct Heart
$312 CAD