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Heart|Natural|GIA

1.51ct I SI1 Heart Natural Diamond

EX • I/SI1 • GIA 6555506948

Certificate GIA 6555506948

Diamond specifications and retailer prices

From $6,279 NZD
As of November 6, 2026
Save $8,415 NZD (57%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $14,695 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 6555506948. Listed at 18 retailers as of November 5, 2026, with prices from $6,279 to $14,695, a $8,415 spread on the same certified stone. NZ Jewellers lists it at $14,695. 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
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6555506948
Dimensions7.00 × 7.88 × 4.58 mm
L/W Ratio1.13
Girdle conditionFaceted
Top View
7.00 mm7.88 mm1.51 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6555506948
Side View
Table 59.0%CrownGirdle: MED-THKPavilionCulet: NDepth 58.2%

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: $14,695 NZD|Low: $6,187 NZD|High: $14,999 NZD|Avg: $8,887 NZD|-2.0%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
November 6, 2026
Retailer 16$6,279 NZD
Retailer 4$6,306 NZD
Retailer 14$6,705 NZD
Retailer 6$7,042 NZD
Retailer 8$7,051 NZD
Retailer 3$7,053 NZD
Retailer 2$7,136 NZD
Retailer 9$7,261 NZD
Retailer 15$7,811 NZD
Retailer 11$7,838 NZD
Retailer 10$7,959 NZD
Retailer 5$8,087 NZD
Retailer 12$10,289 NZD
Retailer 17$10,697 NZD
Retailer 7$13,087 NZD
Retailer 13$13,396 NZD
NZ Jewellers$14,695 NZD

21 data points across 17 retailers

18 retailers$6,279 NZD to $14,695 NZD

A
Cheapest Retailer
-
$6,279 NZD
A
Retailer 2
-
$6,306 NZD
View
A
Retailer 3
-
$6,705 NZD
View
A
Retailer 4
-
$7,042 NZD
View
A
Retailer 5
-
$7,051 NZD
View
A
Retailer 6
-
$7,053 NZD
View
Final sale: no returns
A
Retailer 7
-
$7,136 NZD
View
A
Retailer 8
-
$7,261 NZD
View
A
Retailer 9
-
$7,811 NZD
View
A
Retailer 10
-
$7,838 NZD
View
A
Retailer 11
-
$7,959 NZD
View
A
Retailer 12
-
$8,087 NZD
View
Retailer 13
-
$9,090 NZD
View
Price last confirmed 29 days ago
B+
Retailer 14
-
$10,289 NZD
View
B
Retailer 15
-
$10,697 NZD
View
B
Retailer 16
-
$13,087 NZD
View
B
Retailer 17
-
$13,396 NZD
View
Most Expensive
B
NZ Jewellers
28ec3ddb-0863-4b50-998a-7b353d1e8e5b · Nov 5
$14,695 NZD
$8,146 USD
View
17 more retailers have this diamond
Prices start from $6,279 NZDSave up to $8,415 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
$6,279 NZD