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Heart|Natural|GIA

1.51ct K SI2 Heart Natural Diamond

EX • K/SI2 • GIA 6531540681

Certificate GIA 6531540681

Diamond specifications and retailer prices

From $4,000 CAD
As of November 1, 2026
Save $4,362 CAD (52%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $8,362 CAD at NZ Jewellers · As of November 3, 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 K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6531540681. Listed at 6 retailers as of November 1, 2026, with prices from $4,000 to $8,362, a $4,362 spread on the same certified stone. NZ Jewellers lists it at $8,362. 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
K
Color
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.46°
Pavilion angle40.31°
OriginNatural
Grading LabGIA
CertificateGIA 6531540681
Dimensions7.34 × 7.96 × 4.58 mm
L/W Ratio1.08
Girdle conditionThick
Key to symbols
Twinning Wisp, Feather, Crystal, Cloud, Cavity, Needle, Indented Natural
Top View
7.34 mm7.96 mm1.51 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6531540681
Side View
Table 61.0%Crown 37.46°Girdle: STK-THKPavilion 40.31°Culet: NoneDepth 57.6%

Caratlytics Score

How it works →
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 1
Current: $8,362 CAD|Low: $3,846 CAD|High: $8,445 CAD|Avg: $5,051 CAD|-1.0%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 2, 2026
Retailer 7$3,846 CAD
Retailer 4$4,000 CAD
Retailer 2$4,007 CAD
Retailer 5$4,154 CAD
Retailer 6$4,207 CAD
Retailer 8$4,541 CAD
Retailer 9$4,939 CAD
Retailer 3$7,008 CAD
NZ Jewellers$8,362 CAD

29 data points across 9 retailers

6 retailers$4,000 CAD to $8,362 CAD

A
Cheapest Retailer
-
$4,000 CAD
A
Retailer 2
-
$4,007 CAD
View
A
Retailer 3
-
$4,154 CAD
View
A
Retailer 4
-
$4,207 CAD
View
B
Retailer 5
-
$7,008 CAD
View
Most Expensive
B
NZ Jewellers
7388c1ca-8739-4153-b9d9-457d8c0a68ab · Nov 3
$8,362 CAD
$5,945 USD
View
5 more retailers have this diamond
Prices start from $4,000 CADSave up to $4,362 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
$4,000 CAD