Round|Natural|GIA

1.51ct E SI1 Round Natural Diamond

EX • E/SI1 • GIA 1538904520

Certificate GIA 1538904520

Diamond specifications and retailer prices

From $13,241 NZD

HK$58,100 HKD

As of October 29, 2026

Save $16,534 NZD (56%) vs most expensive(unlock to see where)

25 retailers carry this diamond

Most expensive: $29,775 NZD at NZ Jewellers · As of October 30, 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 E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1538904520. Listed at 25 retailers as of October 29, 2026, with prices from $13,241 to $29,775, a $16,534 spread on the same certified stone. NZ Jewellers lists it at $29,775. 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 angle34.5°

Pavilion angle41.4°

OriginNatural

Grading LabGIA

CertificateGIA 1538904520

Dimensions7.31 × 7.26 × 4.57 mm

L/W Ratio1.01

Girdle conditionFaceted

Culet sizeNone

Key to symbols

Crystal, Feather, Cloud, Needle

View GIA Report →View Loupe360 Video →

Top View

OriginNatural

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateGIA 1538904520

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: Oct 29

Current: $29,775 NZD|Low: $13,241 NZD|High: $29,775 NZD|Avg: $17,228 NZD|+18.9%

NZ Jewellers

Retailer 2

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Retailer 25

October 30, 2026

Retailer 22$13,241 NZD

Retailer 11$13,274 NZD

Retailer 3$13,446 NZD

Retailer 8$13,875 NZD

Retailer 10$13,940 NZD

Retailer 20$14,805 NZD

Retailer 5$14,889 NZD

Retailer 19$14,889 NZD

Retailer 7$15,205 NZD

Retailer 23$16,012 NZD

Retailer 13$16,117 NZD

Retailer 4$16,128 NZD

Retailer 25$16,377 NZD

Retailer 15$16,496 NZD

Retailer 6$17,004 NZD

Retailer 9$17,004 NZD

Retailer 12$17,574 NZD

Retailer 2$18,366 NZD

Retailer 14$18,615 NZD

Retailer 17$18,782 NZD

Retailer 21$19,203 NZD

Retailer 18$19,781 NZD

Retailer 16$21,685 NZD

Retailer 24$24,944 NZD

NZ Jewellers$29,775 NZD

19 data points across 25 retailers

25 retailers$13,241 NZD to $29,775 NZD

Cheapest Retailer

$13,241 NZD

HK$58,100 HKD

Retailer 2

$13,274 NZD

$7,455 USD

View

Retailer 3

$13,446 NZD

$7,552 USD

View

Retailer 4

$13,875 NZD

$7,793 USD

View

Retailer 5

$13,940 NZD

$7,829 USD

View

Retailer 6

$14,805 NZD

$8,315 USD

View

Retailer 7

$14,889 NZD

$8,362 USD

View

B+

Retailer 8

$14,889 NZD

$8,362 USD

View

Final sale: no returns

B+

Retailer 9

$15,205 NZD

$8,540 USD

View

B+

Retailer 10

$16,012 NZD

$8,993 USD

View

B+

Retailer 11

$16,117 NZD

£7,128 GBP

View

B+

Retailer 12

$16,128 NZD

$9,058 USD

View

B+

Retailer 13

$16,377 NZD

$9,198 USD

View

B+

Retailer 14

$16,496 NZD

A$14,253 AUD

View

B+

Retailer 15

$17,004 NZD

$9,550 USD

View

B+

Retailer 16

$17,004 NZD

$9,550 USD

View

B+

Retailer 17

$17,574 NZD

$9,870 USD

View

B+

Retailer 18

$18,366 NZD

£8,122 GBP

View

B+

Retailer 19

$18,615 NZD

€9,957 EUR

View

Retailer 20

$18,782 NZD

$10,549 USD

View

B+

Retailer 21

$19,203 NZD

$10,785 USD

View

Retailer 22

$19,781 NZD

$11,110 USD

View

Price last confirmed 7 days ago

Retailer 23

$21,685 NZD

ZAR 196,753 ZAR

View

Price last confirmed 7 days ago

Retailer 24

$24,944 NZD

£11,031 GBP

View

Most Expensive

NZ Jewellers

02c63f2b-ddb7-4ac2-8ebd-2141d1ef2b1a · Oct 30

$29,775 NZD

$16,723 USD

View

24 more retailers have this diamond

Prices start from $13,241 NZDSave up to $16,534 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 Round

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