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Heart|Natural|GIA

1.51ct K SI1 Heart Natural Diamond

EX • K/SI1 • GIA 2548532604

Certificate GIA 2548532604

Diamond specifications and retailer prices

From $3,400 CAD
As of November 6, 2026
Save $668 CAD (16%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $4,068 CAD at Blue Nile · As of November 5, 2026
View at Blue Nile

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 SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2548532604. Listed at 7 retailers as of November 5, 2026, with prices from $3,400 to $4,068, a $668 spread on the same certified stone. Blue Nile lists it at $4,068. 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
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2548532604
Dimensions6.75 × 8.07 × 4.84 mm
L/W Ratio1.20
Top View
6.75 mm8.07 mm1.51 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2548532604
Side View
Table 61.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 60.0%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: $4,068 CAD|Low: $3,130 CAD|High: $4,680 CAD|Avg: $3,856 CAD|-13.1%
Blue Nile
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 5$3,400 CAD
Retailer 4$3,442 CAD
Retailer 7$3,487 CAD
Retailer 2$3,574 CAD
Retailer 3$3,653 CAD
Retailer 6$3,951 CAD
Blue Nile$4,068 CAD

42 data points across 7 retailers

7 retailers$3,400 CAD to $4,068 CAD

A
Cheapest Retailer
-
$3,400 CAD
A
Retailer 2
-
$3,442 CAD
View
Final sale: no returns
A
Retailer 3
-
$3,487 CAD
View
A
Retailer 4
-
$3,574 CAD
View
A
Retailer 5
-
$3,653 CAD
View
A
Retailer 6
-
$3,951 CAD
View
Most Expensive
A
Blue Nile
28033762 · Nov 5
$4,068 CAD
$2,892 USD
View
6 more retailers have this diamond
Prices start from $3,400 CADSave up to $668 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
$3,400 CAD