Radiant|Natural|GIA

1.51ct I SI1 Radiant Natural Diamond

EX • I/SI1 • GIA 6532464929

Certificate GIA 6532464929

Diamond specifications and retailer prices

From $12,372 NZD

£5,481 GBP

As of November 2, 2026

Save $10,506 NZD (46%) vs most expensive(unlock to see where)

16 retailers carry this diamond

Most expensive: $22,877 NZD 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 SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6532464929. Listed at 16 retailers as of October 27, 2026, with prices from $12,372 to $22,877, a $10,506 spread on the same certified stone. NZ Jewellers lists it at $22,877. 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

OriginNatural

Grading LabGIA

CertificateGIA 6532464929

Dimensions7.73 × 5.60 × 3.84 mm

L/W Ratio1.38

View GIA Report →View Loupe360 Video →

Top View

OriginNatural

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateGIA 6532464929

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: $22,877 NZD|Low: $11,574 NZD|High: $22,877 NZD|Avg: $14,079 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

November 2, 2026

Retailer 7$11,574 NZD

Retailer 6$11,929 NZD

Retailer 2$12,372 NZD

Retailer 5$12,619 NZD

Retailer 3$12,626 NZD

Retailer 12$12,626 NZD

Retailer 9$12,707 NZD

Retailer 4$13,325 NZD

Retailer 15$13,678 NZD

Retailer 14$13,890 NZD

Retailer 10$14,866 NZD

Retailer 13$15,782 NZD

Retailer 8$16,657 NZD

Retailer 11$18,628 NZD

NZ Jewellers$22,877 NZD

39 data points across 15 retailers

16 retailers$12,372 NZD to $22,877 NZD

Retailer 1

$11,574 NZD

$6,512 USD

Price last confirmed 7 days ago

Retailer 2

$11,929 NZD

$6,712 USD

View

Price last confirmed 7 days ago

B+

Retailer 3

$12,372 NZD

£5,481 GBP

View

Retailer 4

$12,619 NZD

$7,100 USD

View

Price last confirmed 5 days ago

Retailer 5

$12,626 NZD

$7,104 USD

View

Price last confirmed 8 days ago

B+

Retailer 6

$12,707 NZD

£5,629 GBP

View

Retailer 7

$13,325 NZD

A$11,534 AUD

View

Price last confirmed 29 days ago

B+

Retailer 8

$13,617 NZD

$7,661 USD

View

Retailer 9

$13,678 NZD

$7,696 USD

View

Price last confirmed 7 days ago

Retailer 10

$13,890 NZD

$7,815 USD

View

Price last confirmed 8 days ago

Retailer 11

$13,970 NZD

$7,860 USD

View

Price last confirmed 8 days ago

Retailer 12

$14,866 NZD

€7,966 EUR

View

Retailer 13

$15,782 NZD

$8,880 USD

View

Retailer 14

$16,657 NZD

ZAR 151,405 ZAR

View

Retailer 15

$18,628 NZD

£8,253 GBP

View

Price last confirmed 7 days ago

Most Expensive

NZ Jewellers

ae27c0d4-f803-44aa-b296-c81b4670f206 · Oct 27

$22,877 NZD

$12,872 USD

View

15 more retailers have this diamond

Prices start from $12,372 NZDSave up to $10,506 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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B+

1.51ct Radiant

$12,372 NZD