Radiant|Natural|GIA

1.51ct I SI2 Radiant Natural Diamond

EX • I/SI2 • GIA 6227537173

Certificate GIA 6227537173

Diamond specifications and retailer prices

From $12,235 NZD

$6,884 USD

As of November 1, 2026

Save $13,900 NZD (53%) vs most expensive(unlock to see where)

18 retailers carry this diamond

Most expensive: $26,135 NZD 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 I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6227537173. Listed at 18 retailers as of October 30, 2026, with prices from $12,235 to $26,135, a $13,900 spread on the same certified stone. NZ Jewellers lists it at $26,135. 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

FluorescenceNone

OriginNatural

Grading LabGIA

CertificateGIA 6227537173

Dimensions7.63 × 5.68 × 4.01 mm

L/W Ratio1.34

View GIA Report →View Loupe360 Video →

Top View

OriginNatural

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateGIA 6227537173

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 1

Current: $26,135 NZD|Low: $12,235 NZD|High: $26,135 NZD|Avg: $16,068 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

November 1, 2026

Retailer 13$12,235 NZD

Retailer 5$12,395 NZD

Retailer 9$13,067 NZD

Retailer 3$13,177 NZD

Retailer 11$14,156 NZD

Retailer 10$14,375 NZD

Retailer 4$14,433 NZD

Retailer 7$14,444 NZD

Retailer 6$15,243 NZD

Retailer 12$16,335 NZD

Retailer 8$17,075 NZD

Retailer 2$21,777 NZD

NZ Jewellers$26,135 NZD

32 data points across 13 retailers

18 retailers$12,235 NZD to $26,135 NZD

B+

Cheapest Retailer

$12,235 NZD

$6,884 USD

B+

Retailer 2

$12,395 NZD

$6,974 USD

View

Retailer 3

$13,067 NZD

$7,352 USD

View

Retailer 4

$13,177 NZD

$7,414 USD

View

Retailer 5

$13,920 NZD

$7,832 USD

View

Retailer 6

$14,156 NZD

$7,965 USD

View

Retailer 7

$14,375 NZD

$8,088 USD

View

Retailer 8

$14,433 NZD

$8,121 USD

View

B+

Retailer 9

$14,444 NZD

£6,399 GBP

View

Retailer 10

$15,243 NZD

£6,753 GBP

View

Retailer 11

$15,391 NZD

$8,660 USD

View

Retailer 12

$15,391 NZD

$8,660 USD

View

Retailer 13

$15,907 NZD

$8,950 USD

View

Retailer 14

$16,335 NZD

$9,191 USD

View

Retailer 15

$17,075 NZD

€9,150 EUR

View

Retailer 16

$17,210 NZD

$9,683 USD

View

Price last confirmed 10 days ago

Retailer 17

$21,777 NZD

£9,648 GBP

View

Most Expensive

NZ Jewellers

aad99454-fecf-44df-9c43-f7e4f1fdefab · Oct 30

$26,135 NZD

$14,705 USD

View

17 more retailers have this diamond

Prices start from $12,235 NZDSave up to $13,900 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

$12,235 NZD