Radiant|Natural|GIA

1.51ct J SI1 Radiant Natural Diamond

EX • J/SI1 • GIA 6535513328

Certificate GIA 6535513328

Diamond specifications and retailer prices

From $4,356 AUD

$3,053 USD

As of October 31, 2026

Save $5,519 AUD (56%) vs most expensive(unlock to see where)

28 retailers carry this diamond

Most expensive: $9,876 AUD 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 J 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 6535513328. Listed at 28 retailers as of October 30, 2026, with prices from $4,356 to $9,876, a $5,519 spread on the same certified stone. NZ Jewellers lists it at $9,876. 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 angle44.83°

Pavilion angle30.94°

OriginNatural

Grading LabGIA

CertificateGIA 6535513328

Dimensions7.22 × 5.66 × 3.94 mm

L/W Ratio1.28

View GIA Report →View Loupe360 Video →

Top View

OriginNatural

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateGIA 6535513328

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: Oct 31

Current: $9,876 AUD|Low: $3,827 AUD|High: $9,876 AUD|Avg: $5,861 AUD

NZ Jewellers

Retailer 2

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Retailer 26

November 2, 2026

Retailer 12$4,356 AUD

Retailer 8$4,466 AUD

Retailer 2$4,467 AUD

Retailer 11$4,498 AUD

Retailer 7$4,558 AUD

Retailer 10$4,740 AUD

Retailer 24$4,937 AUD

Retailer 6$5,135 AUD

Retailer 14$5,135 AUD

Retailer 9$5,141 AUD

Retailer 16$5,204 AUD

Retailer 23$5,332 AUD

Retailer 25$5,585 AUD

Retailer 15$5,608 AUD

Retailer 20$5,798 AUD

Retailer 5$5,807 AUD

Retailer 26$5,807 AUD

Retailer 4$5,924 AUD

Retailer 3$6,007 AUD

Retailer 17$6,067 AUD

Retailer 19$6,245 AUD

Retailer 13$6,248 AUD

Retailer 22$6,967 AUD

Retailer 18$8,191 AUD

Retailer 21$9,479 AUD

NZ Jewellers$9,876 AUD

33 data points across 26 retailers

28 retailers$4,356 AUD to $9,876 AUD

Cheapest Retailer

$4,356 AUD

$3,053 USD

Retailer 2

$4,466 AUD

$3,130 USD

View

Retailer 3

$4,467 AUD

$3,131 USD

View

Retailer 4

$4,498 AUD

$3,152 USD

View

Retailer 5

$4,558 AUD

$3,194 USD

View

Retailer 6

$4,740 AUD

$3,322 USD

View

Final sale: no returns

Retailer 7

$4,937 AUD

$3,460 USD

View

Retailer 8

$5,135 AUD

$3,599 USD

View

Retailer 9

$5,135 AUD

$3,599 USD

View

Retailer 10

$5,141 AUD

$3,603 USD

View

Retailer 11

$5,204 AUD

$3,647 USD

View

Price last confirmed 10 days ago

Retailer 12

$5,332 AUD

$3,737 USD

View

B+

Retailer 13

$5,585 AUD

$3,914 USD

View

B+

Retailer 14

$5,608 AUD

$3,930 USD

View

B+

Retailer 15

$5,758 AUD

View

B+

Retailer 16

$5,798 AUD

£3,200 GBP

View

B+

Retailer 17

$5,807 AUD

$4,070 USD

View

B+

Retailer 18

$5,807 AUD

$4,070 USD

View

B+

Retailer 19

$5,924 AUD

$4,152 USD

View

B+

Retailer 20

$6,007 AUD

$4,210 USD

View

B+

Retailer 21

$6,067 AUD

$4,252 USD

View

Retailer 22

$6,245 AUD

View

Price last confirmed 29 days ago

B+

Retailer 23

$6,248 AUD

€4,170 EUR

View

Retailer 24

$6,415 AUD

$4,496 USD

View

Price last confirmed 57 days ago

B+

Retailer 25

$6,967 AUD

ZAR 78,880 ZAR

View

Retailer 26

$8,191 AUD

$5,740 USD

View

Retailer 27

$9,479 AUD

£5,231 GBP

View

Most Expensive

NZ Jewellers

ab8e341f-9ded-4f5f-a81b-1fa39f0abccc · Oct 30

$9,876 AUD

$6,921 USD

View

27 more retailers have this diamond

Prices start from $4,356 AUDSave up to $5,519 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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