Heart|Natural|GIA

1.51ct D SI1 Heart Natural Diamond

EX • D/SI1 • GIA 1407883320

Certificate GIA 1407883320

Diamond specifications and retailer prices

From $17,750 NZD

$9,987 USD

As of October 28, 2026

Save $10,493 NZD (37%) vs most expensive(unlock to see where)

11 retailers carry this diamond

Most expensive: $28,243 NZD at NZ Jewellers · As of October 27, 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 D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1407883320. Listed at 11 retailers as of October 27, 2026, with prices from $17,750 to $28,243, a $10,493 spread on the same certified stone. NZ Jewellers lists it at $28,243. 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

SI1

Clarity

Excellent

Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

OriginNatural

Grading LabGIA

CertificateGIA 1407883320

Dimensions6.30 × 7.83 × 4.87 mm

L/W Ratio1.24

Culet sizeNone

View GIA Report →View Loupe360 Video →

Top View

OriginNatural

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateGIA 1407883320

Side View

Caratlytics Score

How it works →

B+

Very Good

Strong quality and value balance

Unlock full score analysis

See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 28

Current: $28,243 NZD|Low: $17,750 NZD|High: $28,243 NZD|Avg: $22,199 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

October 25, 2026

Retailer 13$17,750 NZD

Retailer 7$18,645 NZD

Retailer 3$18,893 NZD

Retailer 10$19,190 NZD

Retailer 14$20,190 NZD

Retailer 12$20,725 NZD

Retailer 4$20,741 NZD

Retailer 9$21,043 NZD

Retailer 6$23,194 NZD

Retailer 11$23,914 NZD

Retailer 5$24,169 NZD

Retailer 8$24,597 NZD

Retailer 2$26,501 NZD

NZ Jewellers$28,243 NZD

26 data points across 14 retailers

11 retailers$17,750 NZD to $28,243 NZD

B+

Cheapest Retailer

$17,750 NZD

$9,987 USD

Retailer 2

$18,645 NZD

A$16,139 AUD

View

Price last confirmed 9 days ago

Retailer 3

$18,893 NZD

$10,630 USD

View

Price last confirmed 5 days ago

Retailer 4

$20,190 NZD

$11,360 USD

View

Retailer 5

$20,725 NZD

$11,661 USD

View

Price last confirmed 7 days ago

Retailer 6

$20,741 NZD

$11,670 USD

View

Price last confirmed 8 days ago

Retailer 7

$21,043 NZD

$11,840 USD

View

Price last confirmed 8 days ago

Retailer 8

$23,914 NZD

$13,455 USD

View

Retailer 9

$24,597 NZD

ZAR 223,583 ZAR

View

Price last confirmed 16 days ago

Retailer 10

$26,501 NZD

£11,741 GBP

View

Most Expensive

NZ Jewellers

7c7edc1d-f382-4685-a580-b6c2ed0237bf · Oct 27

$28,243 NZD

$15,891 USD

View

10 more retailers have this diamond

Prices start from $17,750 NZDSave up to $10,493 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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B+

1.51ct Heart

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