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Round|Natural|GIA

1.03ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 2556574821

Certificate GIA 2556574821

Diamond specifications and retailer prices

From $5,385 AUD
As of November 1, 2026
Save $5,548 AUD (51%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $11,961 AUD at NZ Jewellers · As of November 2, 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2556574821. Listed at 15 retailers as of November 1, 2026, with a 103% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 2556574821
Dimensions6.43 × 6.41 × 4.03 mm
L/W Ratio1.00
Star length50%
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Needle
Top View
6.43 mm6.41 mm1.03 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2556574821
Side View
Table 57.0%Crown 36.5°Girdle: THN-STKPavilion 41°Culet: NoneDepth 62.7%

Caratlytics Score

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B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $11,961 AUD|Low: $2,658 AUD|High: $11,961 AUD|Avg: $6,434 AUD
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
November 3, 2026
Retailer 8$2,658 AUD
Retailer 7$3,143 AUD
Retailer 12$5,385 AUD
Retailer 3$5,474 AUD
Retailer 4$5,638 AUD
Retailer 15$5,900 AUD
Retailer 5$6,220 AUD
Retailer 13$6,220 AUD
Retailer 14$6,220 AUD
Retailer 2$6,783 AUD
Retailer 6$7,177 AUD
Retailer 9$7,301 AUD
Retailer 16$7,581 AUD
Retailer 11$8,438 AUD
Retailer 10$10,934 AUD
NZ Jewellers$11,961 AUD

23 data points across 16 retailers

15 retailers$5,385 AUD to $10,934 AUD

Retailer 1
-
$3,143 AUD
Price last confirmed 33 days ago
B
Retailer 2
-
$5,385 AUD
View
B
Retailer 3
-
$5,474 AUD
View
B
Retailer 4
-
$5,638 AUD
View
B
Retailer 5
-
$5,900 AUD
View
B
Retailer 6
-
$6,220 AUD
View
Retailer 7
-
$6,220 AUD
View
Price last confirmed 8 days ago
B
Retailer 8
-
$6,220 AUD
View
B
Retailer 9
-
$6,783 AUD
View
B
Retailer 10
-
$6,823 AUD
View
B
Retailer 11
-
$7,177 AUD
View
B
Retailer 12
-
$7,301 AUD
View
B
Retailer 13
-
$8,438 AUD
View
B
Retailer 14
-
$10,934 AUD
View
Most Expensive
NZ Jewellers
2941b8e2-fb7e-40b5-9a24-504f2ce5863b · Nov 2
$11,961 AUD
$8,373 USD
View
Price under review
14 more retailers have this diamond
Prices start from $5,385 AUDSave up to $5,548 AUD

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.

B
1.03ct Round
$5,385 AUD