Round|Natural|GIA

1.05ct F SI1 Round Natural Diamond

EX • F/SI1 • GIA 2494311908

Certificate GIA 2494311908

Diamond specifications and retailer prices

From $3,498 USD
As of November 6, 2026
Save $4,147 USD (54%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $10,416 USD at Diamond Quarter · As of November 5, 2026
View at Diamond Quarter

About this 1.05ct natural round diamond

This 1.05ct 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 2494311908. Listed at 15 retailers as of November 5, 2026, with a 119% 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

1.05
Carat
F
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
Crown angle35°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 2494311908
Dimensions6.55 × 6.53 × 4.05 mm
L/W Ratio1.00
Star length50%
Lower girdle80%
Top View
6.55 mm6.53 mm1.05 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 2494311908
Side View
Table 57.0%Crown 35°Girdle: THN-STKPavilion 41.2°Culet: NoneDepth 61.9%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $4,417 USD|Low: $3,498 USD|High: $7,072 USD|Avg: $4,677 USD|+1.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 8$3,498 USD
Retailer 5$3,560 USD
Retailer 7$3,795 USD
Retailer 9$3,975 USD
Retailer 1$4,417 USD
Retailer 6$4,680 USD
Retailer 4$4,949 USD
Retailer 2$5,353 USD
Retailer 3$6,969 USD

43 data points across 9 retailers

15 retailers$3,498 USD to $7,645 USD

B+
Cheapest Retailer
-
$3,498 USD
B+
Retailer 2
-
$3,560 USD
View
B+
Retailer 3
-
$3,795 USD
View
B+
Retailer 4
-
$3,975 USD
View
Retailer 5
-
$3,975 USD
View
Price last confirmed 8 days ago
B+
Retailer 6
-
$3,975 USD
View
B+
Retailer 7
-
$4,417 USD
View
B
Retailer 8
-
$4,587 USD
View
Retailer 9
-
$4,680 USD
View
Price last confirmed 28 days ago
B
Retailer 10
-
$4,949 USD
View
Retailer 11
-
$4,964 USD
View
Price last confirmed 14 days ago
B
Retailer 12
-
$5,353 USD
View
B
Retailer 13
-
$6,969 USD
View
B
Retailer 14
-
$7,645 USD
View
Most Expensive
Diamond Quarter
1.05SI1F2408386BN · Nov 5
$10,416 USD
£8,201 GBP
View
Price under review
14 more retailers have this diamond
Prices start from $3,498 USDSave up to $4,147 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+
1.05ct Round
$3,498 USD