Round|Natural|GIA

1.00ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 2566189059

Certificate GIA 2566189059

Diamond specifications and retailer prices

From $4,338 NZD

$2,445 USD

As of November 1, 2026

Save $6,840 NZD (61%) vs most expensive(unlock to see where)

22 retailers carry this diamond

Most expensive: $11,178 NZD at NZ Jewellers · As of October 30, 2026

View at NZ Jewellers

About this 1ct natural round diamond

This 1ct natural round sits in the classic one-carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2566189059. Listed at 22 retailers as of October 30, 2026, with prices from $4,338 to $11,178, a $6,840 spread on the same certified stone. NZ Jewellers lists it at $11,178. 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

1.00

Carat

Colour

SI1

Clarity

Excellent

Cut

Specifications

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceMedium

Crown angle33°

Pavilion angle41.6°

OriginNatural

Grading LabGIA

CertificateGIA 2566189059

Dimensions6.41 × 6.44 × 3.96 mm

L/W Ratio1.00

Culet sizeNone

View GIA Report →View Loupe360 Video →

Top View

OriginNatural

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceMedium

CertificateGIA 2566189059

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: $11,178 NZD|Low: $3,470 NZD|High: $11,178 NZD|Avg: $5,092 NZD

NZ Jewellers

Retailer 2

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Retailer 27

November 2, 2026

Retailer 10$3,470 NZD

Retailer 16$3,669 NZD

Retailer 12$3,769 NZD

Retailer 8$3,815 NZD

Retailer 19$4,103 NZD

Retailer 3$4,338 NZD

Retailer 14$4,466 NZD

Retailer 5$4,480 NZD

Retailer 9$4,727 NZD

Retailer 18$4,729 NZD

Retailer 4$4,764 NZD

Retailer 11$4,777 NZD

Retailer 25$4,844 NZD

Retailer 27$4,844 NZD

Retailer 26$5,030 NZD

Retailer 21$5,144 NZD

Retailer 6$5,493 NZD

Retailer 7$5,589 NZD

Retailer 2$5,635 NZD

Retailer 20$5,848 NZD

Retailer 15$6,152 NZD

Retailer 24$6,208 NZD

Retailer 13$6,232 NZD

Retailer 23$6,572 NZD

Retailer 17$6,753 NZD

Retailer 22$8,941 NZD

NZ Jewellers$11,178 NZD

26 data points across 27 retailers

22 retailers$4,338 NZD to $11,178 NZD

Retailer 1

$3,769 NZD

$2,124 USD

Price last confirmed 18 days ago

Retailer 2

$3,815 NZD

$2,150 USD

View

Price last confirmed 19 days ago

Retailer 3

$4,103 NZD

SGD 3,125 SGD

View

Price last confirmed 19 days ago

B+

Retailer 4

$4,338 NZD

$2,445 USD

View

B+

Retailer 5

$4,445 NZD

$2,505 USD

View

B+

Retailer 6

$4,480 NZD

$2,525 USD

View

B+

Retailer 7

$4,764 NZD

$2,685 USD

View

Retailer 8

$4,777 NZD

£2,120 GBP

View

Price last confirmed 16 days ago

B+

Retailer 9

$4,844 NZD

$2,730 USD

View

B+

Retailer 10

$4,844 NZD

$2,730 USD

View

B+

Retailer 11

$5,030 NZD

$2,835 USD

View

B+

Retailer 12

$5,144 NZD

£2,283 GBP

View

Retailer 13

$5,493 NZD

$3,096 USD

View

Retailer 14

$5,587 NZD

$3,149 USD

View

Retailer 15

$5,589 NZD

$3,150 USD

View

Retailer 16

$5,635 NZD

£2,501 GBP

View

Retailer 17

$6,152 NZD

$3,467 USD

View

Price last confirmed 18 days ago

Retailer 18

$6,232 NZD

€3,345 EUR

View

Retailer 19

$6,572 NZD

ZAR 59,837 ZAR

View

Retailer 20

$6,753 NZD

$3,806 USD

View

Price last confirmed 18 days ago

Retailer 21

$8,941 NZD

£3,968 GBP

View

Most Expensive

NZ Jewellers

6443b987-1d38-4d76-b20b-560ff4338924 · Oct 30

$11,178 NZD

$6,300 USD

View

21 more retailers have this diamond

Prices start from $4,338 NZDSave up to $6,840 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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