Marquise|Natural|GIA

1.51ct I SI1 Marquise Natural Diamond

GD • I/SI1 • GIA 6555854230

Certificate GIA 6555854230

Diamond specifications and retailer prices

From $12,166 NZD

$6,845 USD

As of November 1, 2026

Save $14,433 NZD (54%) vs most expensive(unlock to see where)

18 retailers carry this diamond

Most expensive: $26,599 NZD at NZ Jewellers · As of October 30, 2026

View at NZ Jewellers

About this 1.51ct natural marquise diamond

This 1.51ct natural marquise sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 6555854230. Listed at 18 retailers as of October 30, 2026, with prices from $12,166 to $26,599, a $14,433 spread on the same certified stone. NZ Jewellers lists it at $26,599. 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

SI1

Clarity

Good

Cut (retailer stated)

Specifications

Cut (retailer stated)Good

PolishExcellent

SymmetryExcellent

FluorescenceNone

OriginNatural

Grading LabGIA

CertificateGIA 6555854230

Dimensions10.71 × 5.96 × 3.96 mm

L/W Ratio1.80

Culet sizeNone

View GIA Report →View Loupe360 Video →

Top View

OriginNatural

CutGood

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateGIA 6555854230

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: $26,599 NZD|Low: $11,775 NZD|High: $26,599 NZD|Avg: $16,058 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

November 2, 2026

Retailer 14$12,166 NZD

Retailer 3$12,452 NZD

Retailer 9$12,606 NZD

Retailer 7$13,268 NZD

Retailer 4$13,298 NZD

Retailer 17$13,300 NZD

Retailer 10$14,168 NZD

Retailer 19$14,407 NZD

Retailer 5$14,629 NZD

Retailer 13$14,705 NZD

Retailer 2$15,090 NZD

Retailer 8$15,108 NZD

Retailer 6$15,704 NZD

Retailer 18$16,623 NZD

Retailer 12$17,372 NZD

Retailer 11$17,512 NZD

Retailer 16$19,537 NZD

Retailer 15$22,163 NZD

NZ Jewellers$26,599 NZD

16 data points across 19 retailers

18 retailers$12,166 NZD to $26,599 NZD

B+

Cheapest Retailer

$12,166 NZD

$6,845 USD

B+

Retailer 2

$12,452 NZD

$7,006 USD

View

B+

Retailer 3

$12,606 NZD

$7,093 USD

View

B+

Retailer 4

$13,268 NZD

$7,465 USD

View

B+

Retailer 5

$13,298 NZD

$7,482 USD

View

Final sale: no returns

B+

Retailer 6

$13,300 NZD

$7,483 USD

View

Retailer 7

$14,168 NZD

$7,972 USD

View

Retailer 8

$14,407 NZD

$8,106 USD

View

Retailer 9

$14,629 NZD

$8,231 USD

View

B+

Retailer 10

$14,705 NZD

£6,515 GBP

View

Retailer 11

$15,090 NZD

£6,685 GBP

View

Retailer 12

$15,108 NZD

A$13,078 AUD

View

Price last confirmed 33 days ago

Retailer 13

$15,704 NZD

$8,836 USD

View

Retailer 14

$16,623 NZD

$9,353 USD

View

Retailer 15

$17,372 NZD

€9,309 EUR

View

Retailer 16

$19,537 NZD

ZAR 177,588 ZAR

View

Retailer 17

$22,163 NZD

£9,819 GBP

View

Most Expensive

NZ Jewellers

3e8021c5-b628-48f2-a70b-ff429de73b5f · Oct 30

$26,599 NZD

$14,966 USD

View

17 more retailers have this diamond

Prices start from $12,166 NZDSave up to $14,433 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.

Similar diamonds

B+

1.51ct Marquise

$12,166 NZD