Round|Natural|IGI

1.51ct F SI2 Round Natural Diamond

VG • F/SI2 • IGI 487189405

Shape and cutting style on the report: Round brilliant

Certificate IGI 487189405

Diamond specifications and retailer prices

From $12,291 NZD

₹658,629 INR

As of November 2, 2026

Save $15,034 NZD (55%) vs most expensive(unlock to see where)

20 retailers carry this diamond

Most expensive: $27,325 NZD at Diamond Quarter · As of November 2, 2026

View at Diamond Quarter

About this 1.51ct natural round diamond

This 1.51ct natural round sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI2 clarity (slightly-included), with a very-good cut grade and certified by IGI 487189405. Listed at 20 retailers as of November 2, 2026, with prices from $12,291 to $27,325, a $15,034 spread on the same certified stone. Diamond Quarter lists it at $27,325. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.51

Carat

Colour

SI2

Clarity

Very Good

Cut

Specifications

CutVery Good

PolishExcellent

SymmetryVery Good

FluorescenceFaint

Crown angle36.5°

Pavilion angle41.6°

OriginNatural

Grading LabIGI

CertificateIGI 487189405

Dimensions7.24 × 7.17 × 4.61 mm

L/W Ratio1.01

Girdle conditionFaceted

Culet sizePointed

View IGI Report →View Loupe360 Video →

Top View

OriginNatural

CutVery Good

PolishExcellent

SymmetryVery Good

FluorescenceFaint

CertificateIGI 487189405

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: $12,291 NZD|Low: $12,266 NZD|High: $27,127 NZD|Avg: $17,152 NZD|-0.9%

Retailer 1

Retailer 2

Retailer 3

Retailer 4

Retailer 5

Retailer 6

Retailer 7

Retailer 8

Retailer 9

Retailer 10

Retailer 11

Retailer 12

November 2, 2026

Retailer 1$12,291 NZD

Retailer 7$13,765 NZD

Retailer 12$13,838 NZD

Retailer 9$14,970 NZD

Retailer 11$14,972 NZD

Retailer 2$16,220 NZD

Retailer 10$16,468 NZD

Retailer 8$16,764 NZD

Retailer 5$17,220 NZD

Retailer 4$18,715 NZD

Retailer 6$22,606 NZD

Retailer 3$27,127 NZD

46 data points across 12 retailers

20 retailers$12,291 NZD to $27,325 NZD

B+

Cheapest Retailer

$12,291 NZD

₹658,629 INR

B+

Retailer 2

$13,765 NZD

$7,745 USD

View

B+

Retailer 3

$13,838 NZD

$7,786 USD

View

B+

Retailer 4

$14,019 NZD

$7,888 USD

View

Retailer 5

$14,970 NZD

$8,423 USD

View

Final sale: no returns

Retailer 6

$14,972 NZD

$8,424 USD

View

Price last confirmed 9 days ago

Retailer 7

$16,220 NZD

$9,126 USD

View

Price last confirmed 11 days ago

Retailer 8

$16,220 NZD

$9,126 USD

View

Price last confirmed 46 days ago

Retailer 9

$16,220 NZD

$9,126 USD

View

Price last confirmed 47 days ago

Retailer 10

$16,468 NZD

$9,266 USD

View

Price last confirmed 11 days ago

Retailer 11

$16,577 NZD

$9,327 USD

View

Retailer 12

$17,220 NZD

£7,629 GBP

View

Retailer 13

$18,715 NZD

$10,530 USD

View

Price last confirmed 44 days ago

Retailer 14

$18,715 NZD

$10,530 USD

View

Price last confirmed 10 days ago

Retailer 15

$18,715 NZD

$10,530 USD

View

Price last confirmed 49 days ago

Retailer 16

$22,606 NZD

£10,015 GBP

View

Retailer 17

$27,127 NZD

$15,263 USD

View

Price last confirmed 42 days ago

Retailer 18

$27,127 NZD

$15,263 USD

View

Price last confirmed 10 days ago

Retailer 19

$27,127 NZD

$15,263 USD

View

Price last confirmed 49 days ago

Most Expensive

Diamond Quarter

1.51SI2F480558E2N · Nov 2

$27,325 NZD

£12,106 GBP

View

19 more retailers have this diamond

Prices start from $12,291 NZDSave up to $15,034 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 Round

$12,291 NZD