Round|Natural|GIA

1.05ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 6505241872

Certificate GIA 6505241872

Diamond specifications and retailer prices

From $1,790 USD
As of November 6, 2026
Save $3,177 USD (64%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $4,967 USD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

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 6505241872. Listed at 13 retailers as of November 5, 2026, with prices from $1,790 to $4,967, a $3,177 spread on the same certified stone. NZ Jewellers lists it at $4,967. 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
FluorescenceNone
Crown angle35.5°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 6505241872
Dimensions6.45 × 6.51 × 4.06 mm
L/W Ratio1.01
Girdle conditionSlightly Thick
Top View
6.45 mm6.51 mm1.05 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6505241872
Side View
Table 57.0%Crown 35.5°Girdle: MediumPavilion 41.2°Culet: NoneDepth 62.6%

Caratlytics Score

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

Price History

Last verified: Nov 6
Current: $4,967 USD|Low: $1,790 USD|High: $5,193 USD|Avg: $2,907 USD|-4.4%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 2$1,790 USD
Retailer 11$1,902 USD
Retailer 9$2,146 USD
Retailer 3$2,245 USD
Retailer 4$2,273 USD
Retailer 7$2,498 USD
Retailer 5$2,515 USD
Retailer 6$2,800 USD
Retailer 8$2,900 USD
Retailer 10$4,151 USD
NZ Jewellers$4,967 USD

27 data points across 11 retailers

13 retailers$1,790 USD to $4,967 USD

A
Cheapest Retailer
-
$1,790 USD
A
Retailer 2
-
$1,902 USD
View
Final sale: no returns
A
Retailer 3
-
$2,146 USD
View
A
Retailer 4
-
$2,245 USD
View
A
Retailer 5
-
$2,273 USD
View
A
Retailer 6
-
$2,317 USD
View
A
Retailer 7
-
$2,498 USD
View
A
Retailer 8
-
$2,515 USD
View
B+
Retailer 9
-
$2,800 USD
View
B+
Retailer 10
-
$2,900 USD
View
Retailer 11
-
$3,024 USD
View
Price last confirmed 30 days ago
B
Retailer 12
-
$4,151 USD
View
Most Expensive
B
NZ Jewellers
bd109b5e-5f66-43ef-8a97-8f8c565ab457 · Nov 5
$4,967 USD
View
12 more retailers have this diamond
Prices start from $1,790 USDSave up to $3,177 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
$1,790 USD