Radiant|Natural|GIA

1.51ct I SI1 Radiant Natural Diamond

EX • I/SI1 • GIA 1525780219

Certificate GIA 1525780219

Diamond specifications and retailer prices

From $6,953 NZD

$3,912 USD

As of November 2, 2026

Save $8,568 NZD (55%) vs most expensive(unlock to see where)

29 retailers carry this diamond

Most expensive: $15,521 NZD at NZ Jewellers · As of October 30, 2026

View at NZ Jewellers

About this 1.51ct natural radiant diamond

This 1.51ct natural radiant sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1525780219. Listed at 29 retailers as of October 30, 2026, with prices from $6,953 to $15,521, a $8,568 spread on the same certified stone. NZ Jewellers lists it at $15,521. 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

Crown angle44.97°

Pavilion angle31.5°

OriginNatural

Grading LabGIA

CertificateGIA 1525780219

Dimensions7.21 × 5.69 × 3.91 mm

L/W Ratio1.27

Girdle conditionVery Thick

Key to symbols

Crystal, Cloud, Feather, Needle

View GIA Report →View Loupe360 Video →

Top View

OriginNatural

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateGIA 1525780219

Side View

Caratlytics Score

How it works →

Excellent

Excellent quality and great value

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

Price History

Last verified: Nov 2

Current: $15,521 NZD|Low: $6,011 NZD|High: $15,521 NZD|Avg: $9,070 NZD

NZ Jewellers

Retailer 2

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Retailer 26

November 2, 2026

Retailer 11$6,953 NZD

Retailer 8$6,960 NZD

Retailer 22$7,034 NZD

Retailer 7$7,038 NZD

Retailer 12$7,121 NZD

Retailer 10$7,450 NZD

Retailer 24$7,634 NZD

Retailer 9$8,018 NZD

Retailer 16$8,048 NZD

Retailer 6$8,071 NZD

Retailer 14$8,071 NZD

Retailer 23$8,071 NZD

Retailer 25$8,206 NZD

Retailer 15$8,647 NZD

Retailer 13$8,860 NZD

Retailer 5$9,064 NZD

Retailer 26$9,064 NZD

Retailer 17$9,194 NZD

Retailer 18$9,210 NZD

Retailer 4$9,313 NZD

Retailer 3$9,366 NZD

Retailer 2$9,506 NZD

Retailer 21$10,951 NZD

Retailer 19$12,895 NZD

Retailer 20$14,191 NZD

NZ Jewellers$15,521 NZD

40 data points across 26 retailers

29 retailers$6,953 NZD to $15,521 NZD

Cheapest Retailer

$6,953 NZD

$3,912 USD

Retailer 2

$6,960 NZD

$3,916 USD

View

Retailer 3

$7,034 NZD

$3,958 USD

View

Retailer 4

$7,038 NZD

$3,960 USD

View

Retailer 5

$7,121 NZD

$4,007 USD

View

Retailer 6

$7,361 NZD

A$6,372 AUD

View

Retailer 7

$7,450 NZD

$4,192 USD

View

Final sale: no returns

Retailer 8

$7,634 NZD

$4,295 USD

View

Retailer 9

$8,018 NZD

$4,512 USD

View

Retailer 10

$8,048 NZD

$4,528 USD

View

Price last confirmed 10 days ago

Retailer 11

$8,071 NZD

$4,541 USD

View

Retailer 12

$8,071 NZD

$4,541 USD

View

Retailer 13

$8,071 NZD

$4,541 USD

View

Retailer 14

$8,206 NZD

$4,617 USD

View

Retailer 15

$8,489 NZD

A$7,348 AUD

View

Retailer 16

$8,647 NZD

$4,865 USD

View

Retailer 17

$8,860 NZD

£3,925 GBP

View

Retailer 18

$9,064 NZD

$5,100 USD

View

Retailer 19

$9,064 NZD

$5,100 USD

View

Retailer 20

$9,194 NZD

$5,173 USD

View

Retailer 21

$9,210 NZD

A$7,973 AUD

View

Price last confirmed 23 days ago

Retailer 22

$9,313 NZD

$5,240 USD

View

Retailer 23

$9,366 NZD

$5,270 USD

View

Retailer 24

$9,506 NZD

€5,094 EUR

View

Retailer 25

$9,551 NZD

$5,374 USD

View

Price last confirmed 57 days ago

B+

Retailer 26

$10,951 NZD

ZAR 99,544 ZAR

View

Retailer 27

$12,895 NZD

$7,255 USD

View

B+

Retailer 28

$14,191 NZD

£6,287 GBP

View

Most Expensive

NZ Jewellers

cde40c29-89bd-459f-8487-001a75435224 · Oct 30

$15,521 NZD

$8,733 USD

View

28 more retailers have this diamond

Prices start from $6,953 NZDSave up to $8,568 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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