Radiant|Natural|GIA

0.51ct F SI1 Radiant Natural Diamond

EX • F/SI1 • GIA 6542238999

Certificate GIA 6542238999

Diamond specifications and retailer prices

From $1,207 NZD

SGD 918 SGD

As of October 27, 2026

Save $223 NZD (16%) vs most expensive(unlock to see where)

16 retailers carry this diamond

Most expensive: $3,642 NZD at NZ Jewellers · As of October 24, 2026

View at NZ Jewellers

About this 0.51ct natural radiant diamond

This 0.51ct natural radiant sits in the half to three-quarter carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6542238999. Listed at 16 retailers as of October 27, 2026, with a relatively tight 18% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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

0.51

Carat

Colour

SI1

Clarity

Excellent

Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent

PolishExcellent

SymmetryVery Good

FluorescenceNone

OriginNatural

Grading LabGIA

CertificateGIA 6542238999

Dimensions5.41 × 4.27 × 2.76 mm

L/W Ratio1.27

View GIA Report →View Loupe360 Video →

Top View

OriginNatural

CutExcellent

PolishExcellent

SymmetryVery Good

FluorescenceNone

CertificateGIA 6542238999

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 27

Current: $3,642 NZD|Low: $1,098 NZD|High: $3,642 NZD|Avg: $1,629 NZD

NZ Jewellers

Retailer 2

Retailer 3

Retailer 4

Retailer 5

Retailer 6

Retailer 7

Retailer 8

Retailer 9

Retailer 10

Retailer 11

Retailer 12

Retailer 13

Retailer 14

Retailer 15

Retailer 16

October 27, 2026

Retailer 8$1,098 NZD

Retailer 13$1,161 NZD

Retailer 15$1,161 NZD

Retailer 16$1,207 NZD

Retailer 7$1,207 NZD

Retailer 14$1,340 NZD

Retailer 5$1,379 NZD

Retailer 6$1,396 NZD

Retailer 9$1,422 NZD

Retailer 2$1,430 NZD

Retailer 3$1,493 NZD

Retailer 10$1,696 NZD

Retailer 4$1,746 NZD

Retailer 11$1,788 NZD

Retailer 12$2,686 NZD

NZ Jewellers$3,642 NZD

37 data points across 16 retailers

16 retailers$1,207 NZD to $1,430 NZD

Retailer 1

$1,098 NZD

$618 USD

Price last confirmed 8 days ago

Retailer 2

$1,161 NZD

$653 USD

View

Price last confirmed 7 days ago

Retailer 3

$1,161 NZD

$653 USD

View

Price last confirmed 9 days ago

Retailer 4

$1,207 NZD

$679 USD

View

Price last confirmed 8 days ago

Retailer 5

$1,207 NZD

SGD 918 SGD

View

Retailer 6

$1,340 NZD

$754 USD

View

Price last confirmed 10 days ago

Retailer 7

$1,379 NZD

$776 USD

View

Price last confirmed 7 days ago

Retailer 8

$1,396 NZD

$785 USD

View

Price last confirmed 8 days ago

Retailer 9

$1,422 NZD

£630 GBP

View

Price last confirmed 7 days ago

B+

Retailer 10

$1,430 NZD

£634 GBP

View

Retailer 11

$1,493 NZD

$840 USD

View

Price last confirmed 6 days ago

Retailer 12

$1,696 NZD

€909 EUR

View

Price last confirmed 7 days ago

Retailer 13

$1,746 NZD

A$1,512 AUD

View

Price last confirmed 30 days ago

Retailer 14

$1,788 NZD

ZAR 16,255 ZAR

View

Price last confirmed 7 days ago

Retailer 15

$2,686 NZD

£1,190 GBP

View

Price last confirmed 7 days ago

Most Expensive

NZ Jewellers

b7f5f9fc-64ef-45e7-8d38-debddd2aca39 · Oct 24

$3,642 NZD

$2,049 USD

View

Price last confirmed 9 days ago

15 more retailers have this diamond

Prices start from $1,207 NZDSave up to $223 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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