Round|Natural|GIA

1.05ct F SI1 Round Natural Diamond

EX • F/SI1 • GIA 5426197929

Certificate GIA 5426197929

Diamond specifications and retailer prices

From $2,880 USD
As of November 6, 2026
Save $5,029 USD (64%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $7,909 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 5426197929. Listed at 19 retailers as of November 5, 2026, with prices from $2,880 to $7,909, a $5,029 spread on the same certified stone. Diamond Quarter lists it at $7,909. 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 angle32°
Pavilion angle41.8°
OriginNatural
Grading LabGIA
CertificateGIA 5426197929
Dimensions6.55 × 6.54 × 4.02 mm
L/W Ratio1.00
Top View
6.55 mm6.54 mm1.05 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5426197929
Side View
Table 60.0%Crown 32°Girdle: MED-STKPavilion 41.8°Culet: NoneDepth 61.5%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $4,716 USD|Low: $2,698 USD|High: $6,540 USD|Avg: $3,948 USD|+1.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 5, 2026
Retailer 6$2,880 USD
Retailer 2$2,979 USD
Retailer 8$3,230 USD
Retailer 7$3,290 USD
Retailer 10$3,635 USD
Retailer 4$3,889 USD
Retailer 9$4,139 USD
Retailer 3$4,487 USD
Retailer 1$4,716 USD
Retailer 5$6,463 USD

44 data points across 10 retailers

19 retailers$2,880 USD to $7,909 USD

A
Cheapest Retailer
-
$2,880 USD
B+
Retailer 2
-
$3,230 USD
View
Final sale: no returns
B+
Retailer 3
-
$3,288 USD
View
B+
Retailer 4
-
$3,290 USD
View
Retailer 5
-
$3,501 USD
View
Price last confirmed 8 days ago
B+
Retailer 6
-
$3,501 USD
View
B+
Retailer 7
-
$3,635 USD
View
B+
Retailer 8
-
$3,889 USD
View
B+
Retailer 9
-
$3,937 USD
View
B+
Retailer 10
-
$3,960 USD
View
B+
Retailer 11
-
$3,960 USD
View
B+
Retailer 12
-
$4,039 USD
View
B+
Retailer 13
-
$4,100 USD
View
Retailer 14
-
$4,139 USD
View
Price last confirmed 29 days ago
B
Retailer 15
-
$4,487 USD
View
B
Retailer 16
-
$4,716 USD
View
B
Retailer 17
-
$6,463 USD
View
B
Retailer 18
-
$6,732 USD
View
Most Expensive
B
Diamond Quarter
1.05SI1F5429FE07N · Nov 5
$7,909 USD
£6,228 GBP
View
18 more retailers have this diamond
Prices start from $2,880 USDSave up to $5,029 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.

A
1.05ct Round
$2,880 USD