Round|Natural|GIA

1.51ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 1499381589

Certificate GIA 1499381589

Diamond specifications and retailer prices

From $13,580 NZD

$7,641 USD

As of November 1, 2026

Save $15,427 NZD (53%) vs most expensive(unlock to see where)

19 retailers carry this diamond

Most expensive: $29,007 NZD at NZ Jewellers · As of November 2, 2026

View at NZ Jewellers

About this 1.51ct natural round diamond

This 1.51ct natural round sits in the one-and-a-half to two carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1499381589. Listed at 19 retailers as of November 1, 2026, with prices from $13,580 to $29,007, a $15,427 spread on the same certified stone. NZ Jewellers lists it at $29,007. 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

Specifications

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle36.5°

Pavilion angle40.6°

OriginNatural

Grading LabGIA

CertificateGIA 1499381589

Dimensions7.30 × 7.28 × 4.57 mm

L/W Ratio1.00

Star length55%

Lower girdle75%

Cert comments

Additional clouds are not shown. Pinpoints are not shown.

Key to symbols

Feather, Cloud

View GIA Report →View Loupe360 Video →

Top View

OriginNatural

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateGIA 1499381589

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: Nov 1

Current: $19,219 NZD|Low: $14,505 NZD|High: $24,461 NZD|Avg: $18,428 NZD|-1.2%

Retailer 1

Retailer 2

Retailer 3

Retailer 4

Retailer 5

Retailer 6

Retailer 7

Retailer 8

November 2, 2026

Retailer 7$14,505 NZD

Retailer 2$15,952 NZD

Retailer 8$15,955 NZD

Retailer 6$16,025 NZD

Retailer 4$18,869 NZD

Retailer 1$19,219 NZD

Retailer 5$21,307 NZD

Retailer 3$24,170 NZD

36 data points across 8 retailers

19 retailers$13,580 NZD to $29,007 NZD

Retailer 1

$12,425 NZD

$6,991 USD

Price last confirmed 71 days ago

B+

Retailer 2

$13,580 NZD

$7,641 USD

View

B+

Retailer 3

$14,432 NZD

$8,120 USD

View

B+

Retailer 4

$14,505 NZD

$8,161 USD

View

Retailer 5

$14,505 NZD

$8,161 USD

View

Final sale: no returns

Retailer 6

$15,713 NZD

$8,841 USD

View

B+

Retailer 7

$15,952 NZD

£7,067 GBP

View

Retailer 8

$15,955 NZD

$8,977 USD

View

Retailer 9

$16,025 NZD

A$13,871 AUD

View

Price last confirmed 9 days ago

Retailer 10

$17,186 NZD

$9,670 USD

View

Retailer 11

$17,186 NZD

$9,670 USD

View

Retailer 12

$17,755 NZD

$9,990 USD

View

Retailer 13

$18,130 NZD

$10,201 USD

View

Retailer 14

$18,869 NZD

€10,111 EUR

View

Retailer 15

$19,095 NZD

$10,744 USD

View

Price last confirmed 10 days ago

Retailer 16

$19,219 NZD

£8,514 GBP

View

Retailer 17

$21,307 NZD

ZAR 193,676 ZAR

View

Retailer 18

$24,170 NZD

£10,708 GBP

View

Most Expensive

NZ Jewellers

1689698a-db4d-4d37-997d-21b4358c82c3 · Nov 2

$29,007 NZD

$16,321 USD

View

18 more retailers have this diamond

Prices start from $13,580 NZDSave up to $15,427 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 Round

$13,580 NZD