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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 $4,019 NZD
As of November 6, 2026
Save $6,790 NZD (63%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $10,809 NZD 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 $4,019 to $10,809, a $6,790 spread on the same certified stone. NZ Jewellers lists it at $10,809. 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: $4,810 NZD|Low: $3,727 NZD|High: $8,749 NZD|Avg: $5,319 NZD|-1.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 8$4,019 NZD
Retailer 4$4,047 NZD
Retailer 6$4,323 NZD
Retailer 1$4,810 NZD
Retailer 7$4,864 NZD
Retailer 2$5,440 NZD
Retailer 3$5,641 NZD
Retailer 5$8,645 NZD

43 data points across 8 retailers

22 retailers$4,019 NZD to $10,809 NZD

Retailer 1
-
$3,851 NZD
Price last confirmed 26 days ago
A
Retailer 2
-
$4,019 NZD
View
A
Retailer 3
-
$4,047 NZD
View
A
Retailer 4
-
$4,109 NZD
View
B+
Retailer 5
-
$4,195 NZD
View
B+
Retailer 6
-
$4,323 NZD
View
Final sale: no returns
B+
Retailer 7
-
$4,346 NZD
View
Retailer 8
-
$4,684 NZD
View
Price last confirmed 8 days ago
B+
Retailer 9
-
$4,684 NZD
View
B+
Retailer 10
-
$4,751 NZD
View
B+
Retailer 11
-
$4,810 NZD
View
B+
Retailer 12
-
$4,864 NZD
View
B
Retailer 13
-
$5,354 NZD
View
B
Retailer 14
-
$5,354 NZD
View
B
Retailer 15
-
$5,404 NZD
View
B+
Retailer 16
-
$5,440 NZD
View
B
Retailer 17
-
$5,532 NZD
View
B+
Retailer 18
-
$5,641 NZD
View
Retailer 19
-
$6,004 NZD
View
Price last confirmed 14 days ago
B
Retailer 20
-
$8,645 NZD
View
B
Retailer 21
-
$10,622 NZD
View
Most Expensive
B
NZ Jewellers
bcb0ac1b-07bb-4a7d-b9c3-dcd4980bfa5b · Nov 5
$10,809 NZD
$6,076 USD
View
21 more retailers have this diamond
Prices start from $4,019 NZDSave up to $6,790 NZD

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
$4,019 NZD