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Round|Natural|GIA

1.00ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 6552531225

Certificate GIA 6552531225

Diamond specifications and retailer prices

From $2,450 AUD
As of November 6, 2026
Save $3,273 AUD (57%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $6,925 AUD at NZ Jewellers · As of October 20, 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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6552531225. Listed at 19 retailers as of November 4, 2026, with a 134% 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

1.00
Carat
H
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle34.5°
Pavilion angle41.8°
OriginNatural
Grading LabGIA
CertificateGIA 6552531225
Dimensions6.32 × 6.37 × 4.01 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Top View
6.32 mm6.37 mm1.00 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6552531225
Side View
Table 58.0%Crown 34.5°Girdle: MED-STKPavilion 41.8°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: $6,925 AUD|Low: $2,450 AUD|High: $6,925 AUD|Avg: $3,695 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
November 6, 2026
Retailer 4$2,450 AUD
Retailer 2$2,464 AUD
Retailer 7$2,727 AUD
Retailer 15$2,808 AUD
Retailer 16$2,987 AUD
Retailer 14$3,006 AUD
Retailer 6$3,024 AUD
Retailer 5$3,234 AUD
Retailer 9$3,313 AUD
Retailer 10$3,418 AUD
Retailer 11$3,574 AUD
Retailer 13$3,764 AUD
Retailer 8$3,823 AUD
Retailer 12$3,853 AUD
Retailer 3$4,754 AUD
Retailer 17$5,723 AUD
NZ Jewellers$6,925 AUD

23 data points across 17 retailers

19 retailers$2,450 AUD to $5,723 AUD

A
Cheapest Retailer
-
$2,450 AUD
A
Retailer 2
-
$2,464 AUD
View
Retailer 3
-
$2,727 AUD
View
Price last confirmed 11 days ago
A
Retailer 4
-
$2,808 AUD
View
A
Retailer 5
-
$2,987 AUD
View
A
Retailer 6
-
$3,006 AUD
View
A
Retailer 7
-
$3,024 AUD
View
Final sale: no returns
A
Retailer 8
-
$3,234 AUD
View
Retailer 9
-
$3,313 AUD
View
Price last confirmed 17 days ago
B+
Retailer 10
-
$3,368 AUD
View
B+
Retailer 11
-
$3,418 AUD
View
Retailer 12
-
$3,504 AUD
View
Price last confirmed 22 days ago
B+
Retailer 13
-
$3,574 AUD
View
B+
Retailer 14
-
$3,764 AUD
View
Retailer 15
-
$3,823 AUD
View
Price last confirmed 16 days ago
B+
Retailer 16
-
$3,853 AUD
View
B+
Retailer 17
-
$4,754 AUD
View
B
Retailer 18
-
$5,723 AUD
View
Most Expensive
NZ Jewellers
64dd4573-0d9b-4409-8f8a-84c3ac87e9dd · Oct 20
$6,925 AUD
$4,848 USD
View
Price last confirmed 17 days ago
18 more retailers have this diamond
Prices start from $2,450 AUDSave up to $3,273 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
$2,450 AUD