Round|Natural|GIA

1.05ct F SI1 Round Natural Diamond

EX • F/SI1 • GIA 2494312059

Certificate GIA 2494312059

Diamond specifications and retailer prices

From $3,930 USD
As of November 6, 2026
Save $4,735 USD (55%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $11,540 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 2494312059. Listed at 15 retailers as of November 5, 2026, with a 120% 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
FluorescenceNone
Crown angle36.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 2494312059
Dimensions6.49 × 6.46 × 4.07 mm
L/W Ratio1.00
Star length50%
Lower girdle80%
Top View
6.49 mm6.46 mm1.05 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2494312059
Side View
Table 57.0%Crown 36.5°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.8%

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 6
Current: $4,865 USD|Low: $3,930 USD|High: $8,016 USD|Avg: $5,237 USD|+1.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 8$3,930 USD
Retailer 5$4,045 USD
Retailer 7$4,265 USD
Retailer 9$4,506 USD
Retailer 1$4,865 USD
Retailer 6$5,013 USD
Retailer 3$5,592 USD
Retailer 2$6,068 USD
Retailer 4$7,900 USD

45 data points across 9 retailers

15 retailers$3,930 USD to $8,665 USD

B+
Cheapest Retailer
-
$3,930 USD
B+
Retailer 2
-
$4,045 USD
View
B+
Retailer 3
-
$4,265 USD
View
B
Retailer 4
-
$4,506 USD
View
Retailer 5
-
$4,506 USD
View
Price last confirmed 8 days ago
B
Retailer 6
-
$4,506 USD
View
B
Retailer 7
-
$4,865 USD
View
Retailer 8
-
$5,013 USD
View
Price last confirmed 28 days ago
B
Retailer 9
-
$5,199 USD
View
Retailer 10
-
$5,491 USD
View
Price last confirmed 14 days ago
B
Retailer 11
-
$5,592 USD
View
B
Retailer 12
-
$6,068 USD
View
B
Retailer 13
-
$7,900 USD
View
B
Retailer 14
-
$8,665 USD
View
Most Expensive
Diamond Quarter
1.05SI1F2459DC59N · Nov 5
$11,540 USD
£9,087 GBP
View
Price under review
14 more retailers have this diamond
Prices start from $3,930 USDSave up to $4,735 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
$3,930 USD