Round|Natural|GIA

1.05ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 1453563482

Certificate GIA 1453563482

Diamond specifications and retailer prices

From $3,360 USD
As of November 4, 2026
Save $3,834 USD (53%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $9,877 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 H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1453563482. Listed at 15 retailers as of November 4, 2026, with a 114% 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
H
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle34.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 1453563482
Dimensions6.53 × 6.51 × 4.01 mm
L/W Ratio1.00
Star length55%
Lower girdle80%
Top View
6.53 mm6.51 mm1.05 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1453563482
Side View
Table 58.0%Crown 34.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 61.5%

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 4
Current: $4,132 USD|Low: $2,878 USD|High: $6,988 USD|Avg: $4,408 USD|+0.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 4$3,360 USD
Retailer 7$3,453 USD
Retailer 6$3,515 USD
Retailer 9$3,885 USD
Retailer 1$4,132 USD
Retailer 8$4,427 USD
Retailer 3$4,636 USD
Retailer 2$5,040 USD
Retailer 5$6,906 USD

45 data points across 9 retailers

15 retailers$3,360 USD to $7,194 USD

B+
Cheapest Retailer
-
$3,360 USD
B+
Retailer 2
-
$3,453 USD
View
Final sale: no returns
B+
Retailer 3
-
$3,515 USD
View
Retailer 4
-
$3,741 USD
View
Price last confirmed 8 days ago
B+
Retailer 5
-
$3,741 USD
View
B
Retailer 6
-
$3,885 USD
View
B
Retailer 7
-
$4,132 USD
View
B
Retailer 8
-
$4,316 USD
View
Retailer 9
-
$4,427 USD
View
Price last confirmed 33 days ago
B
Retailer 10
-
$4,636 USD
View
Retailer 11
-
$4,672 USD
View
Price last confirmed 14 days ago
B
Retailer 12
-
$5,040 USD
View
B
Retailer 13
-
$6,906 USD
View
B
Retailer 14
-
$7,194 USD
View
Most Expensive
Diamond Quarter
1.05SI1H14828EC5N · Nov 5
$9,877 USD
£7,778 GBP
View
Price under review
14 more retailers have this diamond
Prices start from $3,360 USDSave up to $3,834 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
$3,360 USD