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Round|Natural|GIA

1.00ct H SI2 Round Natural Diamond

EX • H/SI2 • GIA 3455453944

Certificate GIA 3455453944

Diamond specifications and retailer prices

From $3,227 AUD
As of November 6, 2026
Save $5,453 AUD (63%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $8,680 AUD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1ct natural round diamond

This 1ct natural round sits in the classic one-carat band, graded H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 3455453944. Listed at 22 retailers as of November 5, 2026, with prices from $3,227 to $8,680, a $5,453 spread on the same certified stone. NZ Jewellers lists it at $8,680. 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

1.00
Carat
H
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
Crown angle36.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 3455453944
Dimensions6.38 × 6.32 × 3.99 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Top View
6.38 mm6.32 mm1.00 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 3455453944
Side View
Table 55.0%Crown 36.5°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 63.2%

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: $3,863 AUD|Low: $2,993 AUD|High: $7,025 AUD|Avg: $4,271 AUD|-1.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 8$3,227 AUD
Retailer 4$3,250 AUD
Retailer 6$3,471 AUD
Retailer 1$3,863 AUD
Retailer 7$3,906 AUD
Retailer 2$4,368 AUD
Retailer 3$4,530 AUD
Retailer 5$6,943 AUD

43 data points across 8 retailers

22 retailers$3,227 AUD to $8,680 AUD

Retailer 1
-
$3,093 AUD
Price last confirmed 26 days ago
A
Retailer 2
-
$3,227 AUD
View
A
Retailer 3
-
$3,250 AUD
View
A
Retailer 4
-
$3,300 AUD
View
B+
Retailer 5
-
$3,368 AUD
View
B+
Retailer 6
-
$3,471 AUD
View
Final sale: no returns
B+
Retailer 7
-
$3,490 AUD
View
Retailer 8
-
$3,761 AUD
View
Price last confirmed 8 days ago
B+
Retailer 9
-
$3,761 AUD
View
B+
Retailer 10
-
$3,816 AUD
View
B+
Retailer 11
-
$3,863 AUD
View
B+
Retailer 12
-
$3,906 AUD
View
B
Retailer 13
-
$4,300 AUD
View
B
Retailer 14
-
$4,300 AUD
View
B
Retailer 15
-
$4,340 AUD
View
B+
Retailer 16
-
$4,368 AUD
View
B
Retailer 17
-
$4,443 AUD
View
B+
Retailer 18
-
$4,530 AUD
View
Retailer 19
-
$4,821 AUD
View
Price last confirmed 14 days ago
B
Retailer 20
-
$6,943 AUD
View
B
Retailer 21
-
$8,530 AUD
View
Most Expensive
B
NZ Jewellers
bcb0ac1b-07bb-4a7d-b9c3-dcd4980bfa5b · Nov 5
$8,680 AUD
$6,076 USD
View
21 more retailers have this diamond
Prices start from $3,227 AUDSave up to $5,453 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
1.00ct Round
$3,227 AUD