Round|Natural|GIA

1.31ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 1519325608

Certificate GIA 1519325608

Diamond specifications and retailer prices

From $7,797 NZD

$4,387 USD

As of November 1, 2026

Save $8,707 NZD (53%) vs most expensive(unlock to see where)

16 retailers carry this diamond

Most expensive: $16,504 NZD at NZ Jewellers · As of October 30, 2026

View at NZ Jewellers

About this 1.31ct natural round diamond

This 1.31ct natural round sits in the one-and-a-quarter to one-and-a-half carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1519325608. Listed at 16 retailers as of October 30, 2026, with prices from $7,797 to $16,504, a $8,707 spread on the same certified stone. NZ Jewellers lists it at $16,504. 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

1.31

Carat

Colour

SI1

Clarity

Excellent

Cut

Specifications

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle36°

Pavilion angle40.8°

OriginNatural

Grading LabGIA

CertificateGIA 1519325608

Dimensions6.99 × 6.96 × 4.35 mm

L/W Ratio1.00

Girdle conditionFaceted

Culet sizeNone

Cert comments

Additional clouds are not shown. Pinpoints are not shown.

View GIA Report →View Loupe360 Video →

Top View

OriginNatural

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateGIA 1519325608

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: $9,565 NZD|Low: $6,876 NZD|High: $15,906 NZD|Avg: $10,543 NZD|+0.7%

Retailer 1

Retailer 2

Retailer 3

Retailer 4

Retailer 5

Retailer 6

Retailer 7

Retailer 8

November 2, 2026

Retailer 4$7,918 NZD

Retailer 6$8,252 NZD

Retailer 8$8,940 NZD

Retailer 1$9,565 NZD

Retailer 7$9,884 NZD

Retailer 2$11,119 NZD

Retailer 3$12,130 NZD

Retailer 5$15,802 NZD

44 data points across 8 retailers

16 retailers$7,797 NZD to $16,504 NZD

B+

Cheapest Retailer

$7,797 NZD

$4,387 USD

B+

Retailer 2

$7,918 NZD

$4,455 USD

View

B+

Retailer 3

$8,252 NZD

$4,643 USD

View

Final sale: no returns

Retailer 4

$8,856 NZD

$4,983 USD

View

Retailer 5

$8,940 NZD

$5,030 USD

View

Retailer 6

$8,940 NZD

$5,030 USD

View

Retailer 7

$8,940 NZD

$5,030 USD

View

B+

Retailer 8

$9,462 NZD

$5,324 USD

View

B+

Retailer 9

$9,565 NZD

£4,238 GBP

View

Retailer 10

$9,884 NZD

A$8,556 AUD

View

Price last confirmed 23 days ago

Retailer 11

$10,315 NZD

$5,804 USD

View

Retailer 12

$10,888 NZD

$6,126 USD

View

Price last confirmed 10 days ago

Retailer 13

$11,119 NZD

€5,958 EUR

View

Retailer 14

$12,130 NZD

ZAR 110,259 ZAR

View

Retailer 15

$15,802 NZD

£7,001 GBP

View

Most Expensive

NZ Jewellers

453e8bd4-76ab-4f83-ae35-d2c612b6d1e4 · Oct 30

$16,504 NZD

$9,286 USD

View

15 more retailers have this diamond

Prices start from $7,797 NZDSave up to $8,707 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+

1.31ct Round

$7,797 NZD