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Round|Natural|GIA

1.00ct H SI2 Round Natural Diamond

EX • H/SI2 • GIA 6555742497

Certificate GIA 6555742497

Diamond specifications and retailer prices

From $3,274 AUD
As of November 6, 2026
Save $5,405 AUD (62%) vs most expensive(unlock to see where)
26 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 6555742497. Listed at 26 retailers as of November 5, 2026, with prices from $3,274 to $8,680, a $5,405 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
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 6555742497
Dimensions6.44 × 6.46 × 3.91 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizeNone
Top View
6.44 mm6.46 mm1.00 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6555742497
Side View
Table 57.0%Crown 34°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 60.6%

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: $3,293 AUD|High: $7,025 AUD|Avg: $4,444 AUD|-1.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 5$3,293 AUD
Retailer 1$3,863 AUD
Retailer 6$3,906 AUD
Retailer 7$4,080 AUD
Retailer 8$4,083 AUD
Retailer 2$4,368 AUD
Retailer 3$4,530 AUD
Retailer 4$6,924 AUD

42 data points across 8 retailers

26 retailers$3,274 AUD to $8,680 AUD

A
Cheapest Retailer
-
$3,274 AUD
A
Retailer 2
-
$3,293 AUD
View
Final sale: no returns
A
Retailer 3
-
$3,300 AUD
View
A
Retailer 4
-
$3,368 AUD
View
B+
Retailer 5
-
$3,490 AUD
View
B+
Retailer 6
-
$3,548 AUD
View
B+
Retailer 7
-
$3,761 AUD
View
Retailer 8
-
$3,761 AUD
View
Price last confirmed 8 days ago
B+
Retailer 9
-
$3,816 AUD
View
B+
Retailer 10
-
$3,863 AUD
View
B+
Retailer 11
-
$3,906 AUD
View
B+
Retailer 12
-
$4,080 AUD
View
B+
Retailer 13
-
$4,080 AUD
View
B+
Retailer 14
-
$4,083 AUD
View
B+
Retailer 15
-
$4,111 AUD
View
B+
Retailer 16
-
$4,300 AUD
View
B+
Retailer 17
-
$4,300 AUD
View
B+
Retailer 18
-
$4,338 AUD
View
B+
Retailer 19
-
$4,340 AUD
View
B+
Retailer 20
-
$4,368 AUD
View
B
Retailer 21
-
$4,443 AUD
View
B+
Retailer 22
-
$4,530 AUD
View
B
Retailer 23
-
$5,031 AUD
View
B
Retailer 24
-
$5,983 AUD
View
B
Retailer 25
-
$6,924 AUD
View
Most Expensive
B
NZ Jewellers
3e6af43f-47f0-4dd2-a37d-27fc8b5b5cca · Nov 5
$8,680 AUD
$6,076 USD
View
25 more retailers have this diamond
Prices start from $3,274 AUDSave up to $5,405 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
$3,274 AUD