Heart|Natural|GIA

1.51ct D SI1 Heart Natural Diamond

EX • D/SI1 • GIA 1407883320

Certificate GIA 1407883320

Diamond specifications and retailer prices

From $14,217 AUD

$9,987 USD

As of October 28, 2026

Save $8,405 AUD (37%) vs most expensive(unlock to see where)

12 retailers carry this diamond

Most expensive: $22,622 AUD 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 12 retailers as of October 27, 2026, with prices from $14,217 to $22,622, a $8,405 spread on the same certified stone. NZ Jewellers lists it at $22,622. 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: $22,622 AUD|Low: $14,217 AUD|High: $22,622 AUD|Avg: $17,781 AUD

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$14,217 AUD

Retailer 7$14,934 AUD

Retailer 3$15,133 AUD

Retailer 10$15,371 AUD

Retailer 14$16,172 AUD

Retailer 12$16,601 AUD

Retailer 4$16,613 AUD

Retailer 9$16,855 AUD

Retailer 6$18,578 AUD

Retailer 11$19,155 AUD

Retailer 5$19,359 AUD

Retailer 8$19,702 AUD

Retailer 2$21,227 AUD

NZ Jewellers$22,622 AUD

26 data points across 14 retailers

12 retailers$14,217 AUD to $22,622 AUD

B+

Cheapest Retailer

$14,217 AUD

$9,987 USD

Retailer 2

$14,934 AUD

View

Price last confirmed 9 days ago

Retailer 3

$15,133 AUD

$10,630 USD

View

Retailer 4

$15,371 AUD

£8,502 GBP

View

Price last confirmed 33 days ago

Retailer 5

$16,172 AUD

$11,360 USD

View

Retailer 6

$16,601 AUD

$11,661 USD

View

Retailer 7

$16,613 AUD

$11,670 USD

View

Price last confirmed 8 days ago

Retailer 8

$16,855 AUD

$11,840 USD

View

Price last confirmed 7 days ago

Retailer 9

$19,155 AUD

$13,455 USD

View

Retailer 10

$19,702 AUD

ZAR 223,583 ZAR

View

Price last confirmed 15 days ago

Retailer 11

$21,227 AUD

£11,741 GBP

View

Most Expensive

NZ Jewellers

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

$22,622 AUD

$15,891 USD

View

11 more retailers have this diamond

Prices start from $14,217 AUDSave up to $8,405 AUD

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

$14,217 AUD