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Round|Natural|GIA

1.03ct F SI1 Round Natural Diamond

EX • F/SI1 • GIA 6455666038

Certificate GIA 6455666038

Diamond specifications and retailer prices

From $4,807 AUD
$3,369 USD
As of November 1, 2026
Save $4,248 AUD (47%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $9,433 AUD at NZ Jewellers · As of September 28, 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 6455666038. Listed at 14 retailers as of November 1, 2026, with a 88% 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
F
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 6455666038
Dimensions6.38 × 6.43 × 4.01 mm
L/W Ratio1.01
Star length50%
Lower girdle75%
Culet sizeNone
Key to symbols
Crystal, Cloud, Natural
Top View
6.38 mm6.43 mm1.03 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6455666038
Side View
Table 58.0%Crown 35.5°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.7%

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: $5,209 AUD|Low: $4,580 AUD|High: $9,164 AUD|Avg: $5,990 AUD|-1.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 8$4,807 AUD
Retailer 2$4,987 AUD
Retailer 7$4,997 AUD
Retailer 9$5,180 AUD
Retailer 1$5,209 AUD
Retailer 5$5,578 AUD
Retailer 10$5,800 AUD
Retailer 3$6,309 AUD
Retailer 6$6,655 AUD
Retailer 4$9,055 AUD

41 data points across 10 retailers

14 retailers$4,807 AUD to $9,055 AUD

B+
Cheapest Retailer
-
$4,807 AUD
$3,369 USD
B+
Retailer 2
-
$4,987 AUD
$3,495 USD
View
B+
Retailer 3
-
$4,997 AUD
$3,502 USD
View
Final sale: no returns
B+
Retailer 4
-
$5,180 AUD
$3,630 USD
View
B+
Retailer 5
-
$5,209 AUD
£2,875 GBP
View
Retailer 6
-
$5,414 AUD
$3,794 USD
View
Price last confirmed 32 days ago
B+
Retailer 7
-
$5,578 AUD
£3,078 GBP
View
Retailer 8
-
$5,622 AUD
$3,940 USD
View
Price last confirmed 34 days ago
Retailer 9
-
$5,800 AUD
View
Price last confirmed 24 days ago
Retailer 10
-
$6,247 AUD
$4,378 USD
View
Price last confirmed 33 days ago
B+
Retailer 11
-
$6,309 AUD
€4,211 EUR
View
B
Retailer 12
-
$6,655 AUD
ZAR 75,348 ZAR
View
B
Retailer 13
-
$9,055 AUD
£4,997 GBP
View
Most Expensive
NZ Jewellers
496021fe-891f-47ba-a52f-36089d12cec4 · Sep 28
$9,433 AUD
$6,611 USD
View
Price last confirmed 35 days ago
13 more retailers have this diamond
Prices start from $4,807 AUDSave up to $4,248 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
$4,807 AUD