Round|Natural|GIA

1.03ct F SI1 Round Natural Diamond

EX • F/SI1 • GIA 6455666038

Certificate GIA 6455666038

Diamond specifications and retailer prices

From $3,369 USD
As of November 1, 2026
Save $2,977 USD (47%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $6,611 USD 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
Color
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: $3,651 USD|Low: $3,210 USD|High: $6,422 USD|Avg: $4,198 USD|-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$3,369 USD
Retailer 2$3,495 USD
Retailer 7$3,502 USD
Retailer 9$3,630 USD
Retailer 1$3,651 USD
Retailer 5$3,909 USD
Retailer 10$4,064 USD
Retailer 3$4,422 USD
Retailer 6$4,664 USD
Retailer 4$6,346 USD

41 data points across 10 retailers

14 retailers$3,369 USD to $6,346 USD

B+
Cheapest Retailer
-
$3,369 USD
B+
Retailer 2
-
$3,495 USD
View
B+
Retailer 3
-
$3,502 USD
View
Final sale: no returns
B+
Retailer 4
-
$3,630 USD
View
B+
Retailer 5
-
$3,651 USD
£2,875 GBP
View
Retailer 6
-
$3,794 USD
View
Price last confirmed 31 days ago
B+
Retailer 7
-
$3,909 USD
£3,078 GBP
View
Retailer 8
-
$3,940 USD
View
Price last confirmed 33 days ago
Retailer 9
-
$4,064 USD
A$6,253 AUD
View
Price last confirmed 24 days ago
Retailer 10
-
$4,378 USD
View
Price last confirmed 33 days ago
B+
Retailer 11
-
$4,422 USD
€4,211 EUR
View
B
Retailer 12
-
$4,664 USD
ZAR 75,348 ZAR
View
B
Retailer 13
-
$6,346 USD
£4,997 GBP
View
Most Expensive
NZ Jewellers
496021fe-891f-47ba-a52f-36089d12cec4 · Sep 28
$6,611 USD
View
Price last confirmed 35 days ago
13 more retailers have this diamond
Prices start from $3,369 USDSave up to $2,977 USD

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
$3,369 USD