Round|Natural|GIA

1.03ct F SI1 Round Natural Diamond

EX • F/SI1 • GIA 1559557053

Certificate GIA 1559557053

Diamond specifications and retailer prices

From $4,018 SGD

$3,142 USD

As of October 28, 2026

Save $4,686 SGD (54%) vs most expensive(unlock to see where)

17 retailers carry this diamond

Most expensive: $8,704 SGD at NZ Jewellers · As of October 27, 2026

View at NZ Jewellers

About this 1.03ct natural round diamond

This 1.03ct natural round sits in the classic one-carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1559557053. Listed at 17 retailers as of October 27, 2026, with prices from $4,018 to $8,704, a $4,686 spread on the same certified stone. NZ Jewellers lists it at $8,704. 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

1.03

Carat

Colour

SI1

Clarity

Excellent

Cut

Specifications

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceMedium

Crown angle36°

Pavilion angle40.8°

OriginNatural

Grading LabGIA

CertificateGIA 1559557053

Dimensions6.40 × 6.43 × 4.02 mm

L/W Ratio1.00

Girdle conditionSlightly Thick

Culet sizeNone

Key to symbols

Twinning Wisp, Crystal

View GIA Report →View Loupe360 Video →

Top View

OriginNatural

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceMedium

CertificateGIA 1559557053

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: Oct 28

Current: $5,815 SGD|Low: $4,018 SGD|High: $8,456 SGD|Avg: $5,398 SGD|+17.3%

Retailer 1

Retailer 2

Retailer 3

Retailer 4

Retailer 5

Retailer 6

Retailer 7

Retailer 8

Retailer 9

Retailer 10

November 2, 2026

Retailer 9$4,018 SGD

Retailer 8$4,355 SGD

Retailer 10$4,526 SGD

Retailer 6$5,134 SGD

Retailer 7$5,357 SGD

Retailer 4$5,645 SGD

Retailer 2$5,657 SGD

Retailer 1$5,815 SGD

Retailer 5$6,084 SGD

Retailer 3$8,400 SGD

39 data points across 10 retailers

17 retailers$4,018 SGD to $8,704 SGD

B+

Cheapest Retailer

$4,018 SGD

$3,142 USD

Retailer 2

$4,355 SGD

$3,405 USD

View

Price last confirmed 5 days ago

Retailer 3

$4,526 SGD

$3,539 USD

View

Price last confirmed 8 days ago

Retailer 4

$4,526 SGD

$3,539 USD

View

Price last confirmed 7 days ago

Retailer 5

$4,526 SGD

$3,539 USD

View

Price last confirmed 52 days ago

Retailer 6

$4,700 SGD

$3,675 USD

View

Price last confirmed 8 days ago

B+

Retailer 7

$5,134 SGD

$4,014 USD

View

Retailer 8

$5,223 SGD

$4,084 USD

View

Price last confirmed 56 days ago

B+

Retailer 9

$5,223 SGD

$4,084 USD

View

Retailer 10

$5,357 SGD

A$6,444 AUD

View

Price last confirmed 29 days ago

Retailer 11

$5,645 SGD

€4,204 EUR

View

Retailer 12

$5,657 SGD

$4,423 USD

View

Price last confirmed 10 days ago

Retailer 13

$5,815 SGD

£3,580 GBP

View

Retailer 14

$6,084 SGD

ZAR 76,853 ZAR

View

Retailer 15

$8,400 SGD

£5,172 GBP

View

Retailer 16

$8,704 SGD

$6,806 USD

View

Price last confirmed 52 days ago

Most Expensive

NZ Jewellers

040bf454-6994-43d5-bf2a-fd6506d0bf8e · Oct 27

$8,704 SGD

$6,806 USD

View

16 more retailers have this diamond

Prices start from $4,018 SGDSave up to $4,686 SGD

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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