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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 $4,360 NZD
As of November 6, 2026
Save $857 NZD (16%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $5,217 NZD 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 $4,360 to $5,217, a $857 spread on the same certified stone. Blue Nile lists it at $5,217. 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
Colour
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: $5,217 NZD|Low: $4,014 NZD|High: $6,002 NZD|Avg: $4,940 NZD|-13.1%
Blue Nile
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 7, 2026
Retailer 5$4,360 NZD
Retailer 4$4,414 NZD
Retailer 7$4,472 NZD
Retailer 3$4,584 NZD
Retailer 2$4,670 NZD
Retailer 6$5,067 NZD
Blue Nile$5,217 NZD

43 data points across 7 retailers

7 retailers$4,360 NZD to $5,217 NZD

A
Cheapest Retailer
-
$4,360 NZD
A
Retailer 2
-
$4,414 NZD
View
Final sale: no returns
A
Retailer 3
-
$4,472 NZD
View
A
Retailer 4
-
$4,584 NZD
View
A
Retailer 5
-
$4,670 NZD
View
A
Retailer 6
-
$5,067 NZD
View
Most Expensive
A
Blue Nile
28033762 · Nov 5
$5,217 NZD
$2,892 USD
View
6 more retailers have this diamond
Prices start from $4,360 NZDSave up to $857 NZD

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
$4,360 NZD