Round|Natural|GIA

1.51ct E SI1 Round Natural Diamond

EX • E/SI1 • GIA 6512752915

Certificate GIA 6512752915

Diamond specifications and retailer prices

From $11,897 NZD

HK$52,200 HKD

As of October 29, 2026

Save $14,855 NZD (56%) vs most expensive(unlock to see where)

19 retailers carry this diamond

Most expensive: $26,752 NZD at NZ Jewellers · As of October 30, 2026

View at NZ Jewellers

About this 1.51ct natural round diamond

This 1.51ct natural round sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6512752915. Listed at 19 retailers as of October 29, 2026, with prices from $11,897 to $26,752, a $14,855 spread on the same certified stone. NZ Jewellers lists it at $26,752. 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

Specifications

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle34°

Pavilion angle40.6°

OriginNatural

Grading LabGIA

CertificateGIA 6512752915

Dimensions7.41 × 7.36 × 4.47 mm

L/W Ratio1.01

Star length50%

Lower girdle75%

View GIA Report →View Loupe360 Video →

Top View

OriginNatural

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateGIA 6512752915

Side View

Caratlytics Score

How it works →

Excellent

Excellent quality and great value

Unlock full score analysis

See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29

Current: $26,752 NZD|Low: $11,897 NZD|High: $26,752 NZD|Avg: $15,435 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

Retailer 17

Retailer 18

Retailer 19

October 30, 2026

Retailer 10$11,897 NZD

Retailer 7$11,938 NZD

Retailer 11$12,524 NZD

Retailer 4$13,345 NZD

Retailer 6$13,375 NZD

Retailer 15$13,377 NZD

Retailer 14$14,250 NZD

Retailer 5$14,491 NZD

Retailer 19$14,714 NZD

Retailer 2$14,812 NZD

Retailer 16$15,169 NZD

Retailer 9$15,966 NZD

Retailer 3$16,721 NZD

Retailer 8$16,986 NZD

Retailer 12$17,525 NZD

Retailer 17$17,613 NZD

Retailer 18$19,303 NZD

Retailer 13$22,411 NZD

NZ Jewellers$26,752 NZD

40 data points across 19 retailers

19 retailers$11,897 NZD to $26,752 NZD

Cheapest Retailer

$11,897 NZD

HK$52,200 HKD

Retailer 2

$11,938 NZD

$6,705 USD

View

Retailer 3

$12,524 NZD

$7,034 USD

View

Retailer 4

$13,345 NZD

$7,495 USD

View

Retailer 5

$13,375 NZD

$7,512 USD

View

Final sale: no returns

Retailer 6

$13,377 NZD

$7,513 USD

View

Retailer 7

$14,250 NZD

$8,004 USD

View

B+

Retailer 8

$14,491 NZD

$8,139 USD

View

B+

Retailer 9

$14,714 NZD

$8,264 USD

View

Retailer 10

$14,812 NZD

£6,550 GBP

View

B+

Retailer 11

$15,169 NZD

A$13,107 AUD

View

B+

Retailer 12

$15,966 NZD

$8,967 USD

View

B+

Retailer 13

$16,721 NZD

$9,391 USD

View

B+

Retailer 14

$16,986 NZD

$9,540 USD

View

B+

Retailer 15

$17,525 NZD

€9,374 EUR

View

Retailer 16

$17,613 NZD

$9,892 USD

View

Price last confirmed 7 days ago

Retailer 17

$19,303 NZD

ZAR 175,142 ZAR

View

Price last confirmed 7 days ago

Retailer 18

$22,411 NZD

£9,911 GBP

View

Most Expensive

NZ Jewellers

6ce93c74-746a-4bb5-80ce-0577f7010937 · Oct 30

$26,752 NZD

$15,025 USD

View

18 more retailers have this diamond

Prices start from $11,897 NZDSave up to $14,855 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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1.51ct Round

$11,897 NZD