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Round|Natural|GIA

1.05ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 6505241872

Certificate GIA 6505241872

Diamond specifications and retailer prices

From $2,557 AUD
As of November 6, 2026
Save $4,538 AUD (64%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $7,095 AUD 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 $2,557 to $7,095, a $4,538 spread on the same certified stone. NZ Jewellers lists it at $7,095. 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
Colour
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: $7,095 AUD|Low: $2,557 AUD|High: $7,418 AUD|Avg: $4,153 AUD|-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$2,557 AUD
Retailer 11$2,717 AUD
Retailer 9$3,066 AUD
Retailer 3$3,207 AUD
Retailer 4$3,247 AUD
Retailer 7$3,568 AUD
Retailer 5$3,593 AUD
Retailer 6$4,000 AUD
Retailer 8$4,143 AUD
Retailer 10$5,930 AUD
NZ Jewellers$7,095 AUD

27 data points across 11 retailers

13 retailers$2,557 AUD to $7,095 AUD

A
Cheapest Retailer
-
$2,557 AUD
A
Retailer 2
-
$2,717 AUD
View
Final sale: no returns
A
Retailer 3
-
$3,066 AUD
View
A
Retailer 4
-
$3,207 AUD
View
A
Retailer 5
-
$3,247 AUD
View
A
Retailer 6
-
$3,310 AUD
View
A
Retailer 7
-
$3,568 AUD
View
A
Retailer 8
-
$3,593 AUD
View
B+
Retailer 9
-
$4,000 AUD
View
B+
Retailer 10
-
$4,143 AUD
View
Retailer 11
-
$4,320 AUD
View
Price last confirmed 30 days ago
B
Retailer 12
-
$5,930 AUD
View
Most Expensive
B
NZ Jewellers
bd109b5e-5f66-43ef-8a97-8f8c565ab457 · Nov 5
$7,095 AUD
$4,967 USD
View
12 more retailers have this diamond
Prices start from $2,557 AUDSave up to $4,538 AUD

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
$2,557 AUD