Oval|Natural|GIA

1.51ct F SI2 Oval Natural Diamond

EX • F/SI2 • GIA 6522365391

Certificate GIA 6522365391

Diamond specifications and retailer prices

From $8,523 AUD

$5,973 USD

As of November 1, 2026

Save $9,517 AUD (53%) vs most expensive(unlock to see where)

16 retailers carry this diamond

Most expensive: $18,040 AUD at NZ Jewellers · As of October 30, 2026

View at NZ Jewellers

About this 1.51ct natural oval diamond

This 1.51ct natural oval sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6522365391. Listed at 16 retailers as of October 30, 2026, with prices from $8,523 to $18,040, a $9,517 spread on the same certified stone. NZ Jewellers lists it at $18,040. 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

SI2

Clarity

Excellent

Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent

PolishExcellent

SymmetryExcellent

FluorescenceMedium

Crown angle38.74°

Pavilion angle39.76°

OriginNatural

Grading LabGIA

CertificateGIA 6522365391

Dimensions9.38 × 6.32 × 3.85 mm

L/W Ratio1.48

View GIA Report →View Loupe360 Video →

Top View

OriginNatural

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceMedium

CertificateGIA 6522365391

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 1

Current: $18,040 AUD|Low: $8,523 AUD|High: $18,040 AUD|Avg: $11,267 AUD

NZ Jewellers

Retailer 2

Retailer 3

Retailer 4

Retailer 5

Retailer 6

Retailer 7

Retailer 8

Retailer 9

Retailer 10

Retailer 11

November 2, 2026

Retailer 9$8,523 AUD

Retailer 8$9,021 AUD

Retailer 6$9,771 AUD

Retailer 11$9,923 AUD

Retailer 4$10,170 AUD

Retailer 10$10,287 AUD

Retailer 3$10,677 AUD

Retailer 7$11,275 AUD

Retailer 2$11,784 AUD

Retailer 5$15,032 AUD

NZ Jewellers$18,040 AUD

44 data points across 11 retailers

16 retailers$8,523 AUD to $18,040 AUD

Cheapest Retailer

$8,523 AUD

$5,973 USD

Retailer 2

$9,021 AUD

$6,322 USD

View

B+

Retailer 3

$9,095 AUD

$6,374 USD

View

B+

Retailer 4

$9,771 AUD

$6,848 USD

View

B+

Retailer 5

$9,923 AUD

$6,954 USD

View

B+

Retailer 6

$10,170 AUD

£5,612 GBP

View

B+

Retailer 7

$10,677 AUD

$7,483 USD

View

Retailer 8

$11,275 AUD

$7,902 USD

View

Price last confirmed 62 days ago

B+

Retailer 9

$11,275 AUD

$7,902 USD

View

B+

Retailer 10

$11,415 AUD

$8,000 USD

View

B+

Retailer 11

$11,415 AUD

$8,000 USD

View

B+

Retailer 12

$11,784 AUD

€7,865 EUR

View

Retailer 13

$11,800 AUD

$8,270 USD

View

Retailer 14

$15,032 AUD

£8,295 GBP

View

Retailer 15

$18,040 AUD

$12,643 USD

View

Price last confirmed 64 days ago

Most Expensive

NZ Jewellers

eb984eed-b178-4d39-863e-7afc21aeca99 · Oct 30

$18,040 AUD

$12,643 USD

View

15 more retailers have this diamond

Prices start from $8,523 AUDSave up to $9,517 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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1.51ct Oval

$8,523 AUD