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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 $6,003 NZD
As of November 6, 2026
Save $8,130 NZD (58%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $14,134 NZD 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 $6,003 to $14,134, a $8,130 spread on the same certified stone. NZ Jewellers lists it at $14,134. 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
Colour
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: $14,134 NZD|Low: $6,003 NZD|High: $15,555 NZD|Avg: $9,315 NZD|-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$6,003 NZD
Retailer 5$6,916 NZD
Retailer 8$7,208 NZD
Retailer 3$7,566 NZD
Retailer 6$8,112 NZD
Retailer 7$8,112 NZD
Retailer 10$8,756 NZD
Retailer 2$9,277 NZD
Retailer 4$12,885 NZD
NZ Jewellers$14,134 NZD

41 data points across 10 retailers

10 retailers$6,003 NZD to $14,134 NZD

A
Cheapest Retailer
-
$6,003 NZD
A
Retailer 2
-
$6,916 NZD
View
A
Retailer 3
-
$7,208 NZD
View
A
Retailer 4
-
$7,566 NZD
View
B+
Retailer 5
-
$8,112 NZD
View
A
Retailer 6
-
$8,112 NZD
View
B+
Retailer 7
-
$8,756 NZD
View
B+
Retailer 8
-
$9,277 NZD
View
B
Retailer 9
-
$12,885 NZD
View
Most Expensive
B
NZ Jewellers
5ee50bfa-4b5f-4949-8ef4-69ff66f075be · Nov 5
$14,134 NZD
$7,835 USD
View
9 more retailers have this diamond
Prices start from $6,003 NZDSave up to $8,130 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
$6,003 NZD