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Heart|Natural|GIA

1.51ct I SI1 Heart Natural Diamond

EX • I/SI1 • GIA 3555728617

Certificate GIA 3555728617

Diamond specifications and retailer prices

From $4,681 CAD
As of November 6, 2026
Save $6,340 CAD (58%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $11,021 CAD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.51ct natural heart diamond

This 1.51ct natural heart sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 3555728617. Listed at 10 retailers as of November 5, 2026, with prices from $4,681 to $11,021, a $6,340 spread on the same certified stone. NZ Jewellers lists it at $11,021. 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
I
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Pavilion angle34.89°
OriginNatural
Grading LabGIA
CertificateGIA 3555728617
Dimensions7.56 × 8.04 × 4.05 mm
L/W Ratio1.06
Key to symbols
Twinning Wisp, Feather, Crystal
Top View
7.56 mm8.04 mm1.51 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 3555728617
Side View
Table 55.0%CrownGirdle: STK-VTKPavilion 34.89°Culet: NoneDepth 53.6%

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: $11,021 CAD|Low: $4,681 CAD|High: $12,129 CAD|Avg: $7,263 CAD|-9.1%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 9$4,681 CAD
Retailer 5$5,393 CAD
Retailer 8$5,621 CAD
Retailer 3$5,899 CAD
Retailer 6$6,325 CAD
Retailer 7$6,325 CAD
Retailer 10$6,828 CAD
Retailer 2$7,234 CAD
Retailer 4$10,047 CAD
NZ Jewellers$11,021 CAD

41 data points across 10 retailers

10 retailers$4,681 CAD to $11,021 CAD

A
Cheapest Retailer
-
$4,681 CAD
A
Retailer 2
-
$5,393 CAD
View
A
Retailer 3
-
$5,621 CAD
View
A
Retailer 4
-
$5,899 CAD
View
B+
Retailer 5
-
$6,325 CAD
View
A
Retailer 6
-
$6,325 CAD
View
B+
Retailer 7
-
$6,828 CAD
View
B+
Retailer 8
-
$7,234 CAD
View
B
Retailer 9
-
$10,047 CAD
View
Most Expensive
B
NZ Jewellers
5ee50bfa-4b5f-4949-8ef4-69ff66f075be · Nov 5
$11,021 CAD
$7,835 USD
View
9 more retailers have this diamond
Prices start from $4,681 CADSave up to $6,340 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
$4,681 CAD