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Round|Natural|GIA

1.00ct H SI1 Round Natural Diamond

GD • H/SI1 • GIA 2556450106

Certificate GIA 2556450106

Diamond specifications and retailer prices

From $2,211 AUD
As of November 6, 2026
Save $4,693 AUD (68%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: $6,904 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 SI1 clarity (slightly-included), with a standard cut grade and certified by GIA 2556450106. Listed at 25 retailers as of November 5, 2026, with prices from $2,211 to $6,904, a $4,693 spread on the same certified stone. NZ Jewellers lists it at $6,904. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.00
Carat
H
Colour
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryGood
FluorescenceFaint
Crown angle40°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 2556450106
Dimensions6.02 × 6.11 × 4.09 mm
L/W Ratio1.01
Culet sizeNone
Key to symbols
Feather, Cloud, Pinpoint, Indented Natural, Natural
Top View
6.02 mm6.11 mm1.00 ctH / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryGood
FluorescenceFaint
CertificateGIA 2556450106
Side View
Table 59.0%Crown 40°Girdle: MED-VTKPavilion 41°Culet: NoneDepth 67.4%

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: $6,904 AUD|Low: $2,194 AUD|High: $6,904 AUD|Avg: $3,356 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
Retailer 18
Retailer 19
Retailer 20
Retailer 21
Retailer 22
Retailer 23
Retailer 24
November 6, 2026
Retailer 24$2,211 AUD
Retailer 2$2,213 AUD
Retailer 10$2,543 AUD
Retailer 15$2,557 AUD
Retailer 12$2,613 AUD
Retailer 21$2,664 AUD
Retailer 11$2,828 AUD
Retailer 7$2,831 AUD
Retailer 9$2,831 AUD
Retailer 3$2,886 AUD
Retailer 4$2,923 AUD
Retailer 8$2,961 AUD
Retailer 6$3,027 AUD
Retailer 18$3,038 AUD
Retailer 13$3,073 AUD
Retailer 14$3,266 AUD
Retailer 19$3,274 AUD
Retailer 20$3,454 AUD
Retailer 22$3,764 AUD
Retailer 5$4,136 AUD
Retailer 16$4,157 AUD
Retailer 17$4,274 AUD
Retailer 23$4,960 AUD
NZ Jewellers$6,904 AUD

27 data points across 24 retailers

25 retailers$2,211 AUD to $6,904 AUD

B+
Cheapest Retailer
-
$2,211 AUD
A
Retailer 2
-
$2,213 AUD
View
B+
Retailer 3
-
$2,543 AUD
View
B+
Retailer 4
-
$2,557 AUD
View
B+
Retailer 5
-
$2,613 AUD
View
Final sale: no returns
B+
Retailer 6
-
$2,664 AUD
View
B+
Retailer 7
-
$2,828 AUD
View
B+
Retailer 8
-
$2,831 AUD
View
Retailer 9
-
$2,831 AUD
View
Price last confirmed 8 days ago
B+
Retailer 10
-
$2,886 AUD
View
B+
Retailer 11
-
$2,923 AUD
View
B+
Retailer 12
-
$2,961 AUD
View
B+
Retailer 13
-
$3,027 AUD
View
B+
Retailer 14
-
$3,038 AUD
View
B+
Retailer 15
-
$3,073 AUD
View
B+
Retailer 16
-
$3,266 AUD
View
B+
Retailer 17
-
$3,274 AUD
View
B+
Retailer 18
-
$3,454 AUD
View
Retailer 19
-
$3,671 AUD
View
Price last confirmed 32 days ago
B+
Retailer 20
-
$3,764 AUD
View
B
Retailer 21
-
$4,136 AUD
View
B
Retailer 22
-
$4,157 AUD
View
B
Retailer 23
-
$4,274 AUD
View
B
Retailer 24
-
$4,960 AUD
View
Most Expensive
C
NZ Jewellers
a8977eb8-a3da-4fd8-8ac7-0b132184bc8c · Nov 5
$6,904 AUD
$4,833 USD
View
24 more retailers have this diamond
Prices start from $2,211 AUDSave up to $4,693 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
$2,211 AUD