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Round|Natural|GIA

1.00ct H SI2 Round Natural Diamond

EX • H/SI2 • GIA 6555401272

Certificate GIA 6555401272

Diamond specifications and retailer prices

From $2,504 AUD
As of November 6, 2026
Save $4,281 AUD (63%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $6,785 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 6555401272. Listed at 21 retailers as of November 5, 2026, with prices from $2,504 to $6,785, a $4,281 spread on the same certified stone. NZ Jewellers lists it at $6,785. 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 angle33.5°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 6555401272
Dimensions6.35 × 6.39 × 3.95 mm
L/W Ratio1.01
Culet sizeNone
Key to symbols
Feather, Crystal
Top View
6.35 mm6.39 mm1.00 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6555401272
Side View
Table 61.0%Crown 33.5°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 61.9%

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: $3,020 AUD|Low: $2,504 AUD|High: $5,715 AUD|Avg: $3,410 AUD|-1.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 3$2,504 AUD
Retailer 8$2,514 AUD
Retailer 6$2,708 AUD
Retailer 9$2,858 AUD
Retailer 1$3,020 AUD
Retailer 2$3,123 AUD
Retailer 4$3,480 AUD
Retailer 5$3,506 AUD
Retailer 7$3,727 AUD
Retailer 10$3,901 AUD
Retailer 11$5,671 AUD

25 data points across 11 retailers

21 retailers$2,504 AUD to $6,785 AUD

A
Cheapest Retailer
-
$2,504 AUD
A
Retailer 2
-
$2,514 AUD
View
A
Retailer 3
-
$2,708 AUD
View
A
Retailer 4
-
$2,858 AUD
View
A
Retailer 5
-
$2,931 AUD
View
A
Retailer 6
-
$2,994 AUD
View
Final sale: no returns
A
Retailer 7
-
$3,020 AUD
View
A
Retailer 8
-
$3,123 AUD
View
Retailer 9
-
$3,246 AUD
View
Price last confirmed 8 days ago
A
Retailer 10
-
$3,246 AUD
View
B+
Retailer 11
-
$3,396 AUD
View
B+
Retailer 12
-
$3,444 AUD
View
B+
Retailer 13
-
$3,480 AUD
View
B+
Retailer 14
-
$3,506 AUD
View
B+
Retailer 15
-
$3,540 AUD
View
B+
Retailer 16
-
$3,727 AUD
View
B+
Retailer 17
-
$3,744 AUD
View
B+
Retailer 18
-
$3,901 AUD
View
B
Retailer 19
-
$4,840 AUD
View
B
Retailer 20
-
$5,671 AUD
View
Most Expensive
B
NZ Jewellers
856f0a8c-3b65-4e36-9112-446ac20fed2e · Nov 5
$6,785 AUD
$4,750 USD
View
20 more retailers have this diamond
Prices start from $2,504 AUDSave up to $4,281 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
$2,504 AUD