Round|Natural|GIA

1.50ct D SI2 Round Natural Diamond

EX • D/SI2 • GIA 6451465789

Certificate GIA 6451465789

Diamond specifications and retailer prices

From $14,212 NZD

$8,010 USD

As of October 25, 2026

Save $15,600 NZD (52%) vs most expensive(unlock to see where)

16 retailers carry this diamond

Most expensive: $29,812 NZD at Diamond Quarter · As of October 31, 2026

View at Diamond Quarter

About this 1.5ct natural round diamond

This 1.5ct natural round sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6451465789. Listed at 16 retailers as of October 25, 2026, with prices from $14,212 to $29,812, a $15,600 spread on the same certified stone. Diamond Quarter lists it at $29,812. 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

1.50

Carat

Colour

SI2

Clarity

Excellent

Cut

Specifications

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle35.5°

Pavilion angle40.6°

OriginNatural

Grading LabGIA

CertificateGIA 6451465789

Dimensions7.37 × 7.33 × 4.54 mm

L/W Ratio1.01

Star length55%

Lower girdle80%

View GIA Report →View Loupe360 Video →

Top View

OriginNatural

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateGIA 6451465789

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 25

Current: $16,797 NZD|Low: $12,894 NZD|High: $25,786 NZD|Avg: $18,514 NZD|+0.0%

Retailer 1

Retailer 2

Retailer 3

Retailer 4

Retailer 5

Retailer 6

Retailer 7

Retailer 8

Retailer 9

Retailer 10

November 1, 2026

Retailer 5$14,212 NZD

Retailer 2$15,472 NZD

Retailer 6$15,472 NZD

Retailer 9$16,762 NZD

Retailer 1$16,797 NZD

Retailer 7$17,019 NZD

Retailer 3$19,310 NZD

Retailer 10$19,340 NZD

Retailer 4$24,293 NZD

Retailer 8$25,786 NZD

43 data points across 10 retailers

16 retailers$14,212 NZD to $29,812 NZD

Cheapest Retailer

$14,212 NZD

$8,010 USD

Retailer 2

$14,485 NZD

$8,164 USD

View

B+

Retailer 3

$15,472 NZD

$8,720 USD

View

B+

Retailer 4

$15,472 NZD

$8,720 USD

View

Final sale: no returns

B+

Retailer 5

$16,762 NZD

$9,447 USD

View

B+

Retailer 6

$16,797 NZD

£7,454 GBP

View

B+

Retailer 7

$17,019 NZD

$9,592 USD

View

B+

Retailer 8

$18,275 NZD

$10,300 USD

View

B+

Retailer 9

$18,275 NZD

$10,300 USD

View

B+

Retailer 10

$18,879 NZD

$10,640 USD

View

B+

Retailer 11

$19,310 NZD

€10,365 EUR

View

B+

Retailer 12

$19,340 NZD

$10,900 USD

View

Retailer 13

$20,364 NZD

$11,477 USD

View

Price last confirmed 8 days ago

Retailer 14

$24,293 NZD

£10,781 GBP

View

Retailer 15

$25,786 NZD

$14,533 USD

View

Most Expensive

Diamond Quarter

1.5SI2D648989CAN · Oct 31

$29,812 NZD

£13,230 GBP

View

15 more retailers have this diamond

Prices start from $14,212 NZDSave up to $15,600 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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