Heart|Natural|GIA

1.51ct J SI2 Heart Natural Diamond

EX • J/SI2 • GIA 7456939844

Certificate GIA 7456939844

Diamond specifications and retailer prices

From $4,658 NZD

$2,621 USD

As of November 1, 2026

Save $2,149 NZD (32%) vs most expensive(unlock to see where)

13 retailers carry this diamond

Most expensive: $11,057 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 J 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 7456939844. Listed at 13 retailers as of November 1, 2026, with a 46% 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

Colour

SI2

Clarity

Excellent

Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle46.5°

Pavilion angle37.97°

OriginNatural

Grading LabGIA

CertificateGIA 7456939844

Dimensions6.64 × 7.87 × 4.77 mm

L/W Ratio1.19

View GIA Report →View Loupe360 Video →

Top View

OriginNatural

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateGIA 7456939844

Side View

Caratlytics Score

How it works →

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 1

Current: $11,057 NZD|Low: $4,658 NZD|High: $11,057 NZD|Avg: $6,786 NZD

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

Retailer 18

Retailer 19

October 27, 2026

Retailer 17$4,658 NZD

Retailer 18$4,984 NZD

Retailer 19$5,133 NZD

Retailer 10$5,501 NZD

Retailer 14$5,750 NZD

Retailer 15$5,972 NZD

Retailer 11$6,162 NZD

Retailer 16$6,235 NZD

Retailer 12$6,355 NZD

Retailer 8$6,416 NZD

Retailer 4$6,594 NZD

Retailer 5$6,594 NZD

Retailer 2$6,699 NZD

Retailer 7$6,798 NZD

Retailer 3$6,807 NZD

Retailer 6$7,200 NZD

Retailer 9$8,813 NZD

Retailer 13$10,629 NZD

NZ Jewellers$11,057 NZD

19 data points across 19 retailers

13 retailers$4,658 NZD to $6,807 NZD

Cheapest Retailer

$4,658 NZD

$2,621 USD

Retailer 2

$4,984 NZD

$2,804 USD

View

Price last confirmed 7 days ago

Retailer 3

$5,133 NZD

$2,888 USD

View

Retailer 4

$5,750 NZD

$3,235 USD

View

Price last confirmed 7 days ago

Retailer 5

$5,972 NZD

$3,360 USD

View

Price last confirmed 8 days ago

B+

Retailer 6

$6,235 NZD

$3,508 USD

View

B+

Retailer 7

$6,355 NZD

£2,816 GBP

View

B+

Retailer 8

$6,594 NZD

$3,710 USD

View

B+

Retailer 9

$6,594 NZD

$3,710 USD

View

B+

Retailer 10

$6,699 NZD

$3,769 USD

View

B+

Retailer 11

$6,807 NZD

$3,830 USD

View

Retailer 12

$10,629 NZD

£4,709 GBP

View

Price last confirmed 7 days ago

Most Expensive

NZ Jewellers

5ff0a33f-bce3-4bc9-b74d-835c40274907 · Oct 24

$11,057 NZD

$6,221 USD

View

Price last confirmed 9 days ago

12 more retailers have this diamond

Prices start from $4,658 NZDSave up to $2,149 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.

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1.51ct Heart

$4,658 NZD