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Heart|Natural|GIA

1.51ct I SI2 Heart Natural Diamond

EX • I/SI2 • GIA 2556424615

Certificate GIA 2556424615

Diamond specifications and retailer prices

From $5,973 NZD
As of November 5, 2026
Save $7,107 NZD (54%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $14,346 NZD at NZ Jewellers · As of October 24, 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 SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2556424615. Listed at 15 retailers as of November 4, 2026, with a 119% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2556424615
Dimensions7.08 × 7.99 × 4.41 mm
L/W Ratio1.13
Girdle conditionFaceted
Top View
7.08 mm7.99 mm1.51 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2556424615
Side View
Table 57.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 55.1%

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 5
Current: $14,346 NZD|Low: $5,973 NZD|High: $14,695 NZD|Avg: $8,786 NZD|-2.4%
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
November 6, 2026
Retailer 14$5,973 NZD
Retailer 10$6,025 NZD
Retailer 4$6,525 NZD
Retailer 2$6,720 NZD
Retailer 5$6,830 NZD
Retailer 6$6,837 NZD
Retailer 7$7,075 NZD
Retailer 9$7,468 NZD
Retailer 13$7,594 NZD
Retailer 12$7,795 NZD
Retailer 11$10,715 NZD
Retailer 8$12,368 NZD
Retailer 3$13,080 NZD
NZ Jewellers$14,346 NZD

26 data points across 14 retailers

15 retailers$5,973 NZD to $13,080 NZD

A
Cheapest Retailer
-
$5,973 NZD
A
Retailer 2
-
$6,025 NZD
View
A
Retailer 3
-
$6,525 NZD
View
A
Retailer 4
-
$6,720 NZD
View
Final sale: no returns
A
Retailer 5
-
$6,830 NZD
View
A
Retailer 6
-
$6,837 NZD
View
A
Retailer 7
-
$7,075 NZD
View
A
Retailer 8
-
$7,468 NZD
View
A
Retailer 9
-
$7,594 NZD
View
A
Retailer 10
-
$7,795 NZD
View
B+
Retailer 11
-
$8,451 NZD
View
B
Retailer 12
-
$10,715 NZD
View
B
Retailer 13
-
$12,368 NZD
View
B
Retailer 14
-
$13,080 NZD
View
Most Expensive
NZ Jewellers
f9d93be4-a7b3-4f11-9949-bab1c55ecbc4 · Oct 24
$14,346 NZD
$7,953 USD
View
Price last confirmed 13 days ago
14 more retailers have this diamond
Prices start from $5,973 NZDSave up to $7,107 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
$5,973 NZD