Radiant|Natural|GIA

1.51ct I SI2 Radiant Natural Diamond

GD • I/SI2 • GIA 6525240450

Certificate GIA 6525240450

Diamond specifications and retailer prices

From $4,379 AUD

$3,069 USD

As of November 2, 2026

Save $5,224 AUD (54%) vs most expensive(unlock to see where)

14 retailers carry this diamond

Most expensive: $9,603 AUD at NZ Jewellers · As of October 27, 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 SI2 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 6525240450. Listed at 14 retailers as of October 27, 2026, with prices from $4,379 to $9,603, a $5,224 spread on the same certified stone. NZ Jewellers lists it at $9,603. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.51

Carat

Colour

SI2

Clarity

Good

Cut (retailer stated)

Specifications

Cut (retailer stated)Good

PolishExcellent

SymmetryExcellent

FluorescenceStrong

OriginNatural

Grading LabGIA

CertificateGIA 6525240450

Dimensions7.34 × 5.63 × 4.06 mm

L/W Ratio1.30

View GIA Report →View Loupe360 Video →

Top View

OriginNatural

CutGood

PolishExcellent

SymmetryExcellent

FluorescenceStrong

CertificateGIA 6525240450

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 2

Current: $9,603 AUD|Low: $3,981 AUD|High: $9,603 AUD|Avg: $6,040 AUD

NZ Jewellers

Retailer 2

Retailer 3

Retailer 4

Retailer 5

Retailer 6

Retailer 7

Retailer 8

Retailer 9

Retailer 10

November 2, 2026

Retailer 6$4,331 AUD

Retailer 7$4,379 AUD

Retailer 9$4,993 AUD

Retailer 10$4,993 AUD

Retailer 8$5,185 AUD

Retailer 2$5,376 AUD

Retailer 4$5,638 AUD

Retailer 3$6,072 AUD

Retailer 5$9,218 AUD

NZ Jewellers$9,603 AUD

41 data points across 10 retailers

14 retailers$4,379 AUD to $9,603 AUD

Retailer 1

$4,331 AUD

$3,035 USD

Price last confirmed 8 days ago

B+

Retailer 2

$4,379 AUD

$3,069 USD

View

Final sale: no returns

B+

Retailer 3

$4,433 AUD

$3,107 USD

View

Retailer 4

$4,993 AUD

$3,499 USD

View

Price last confirmed 8 days ago

Retailer 5

$4,993 AUD

$3,499 USD

View

Price last confirmed 11 days ago

Retailer 6

$5,185 AUD

$3,634 USD

View

Price last confirmed 8 days ago

B+

Retailer 7

$5,376 AUD

£2,967 GBP

View

B+

Retailer 8

$5,474 AUD

$3,836 USD

View

B+

Retailer 9

$5,638 AUD

£3,111 GBP

View

Retailer 10

$5,762 AUD

$4,038 USD

View

Price last confirmed 10 days ago

B+

Retailer 11

$6,072 AUD

€4,053 EUR

View

Retailer 12

$6,240 AUD

$4,373 USD

View

Price last confirmed 10 days ago

Retailer 13

$9,218 AUD

£5,087 GBP

View

Most Expensive

NZ Jewellers

363558b4-d8ed-4fd6-9675-3dbf51520a58 · Oct 27

$9,603 AUD

$6,730 USD

View

13 more retailers have this diamond

Prices start from $4,379 AUDSave up to $5,224 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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