Round|Natural|GIA

1.00ct H SI1 Round Natural Diamond

GD • H/SI1 • GIA 2556450106

Certificate GIA 2556450106

Diamond specifications and retailer prices

From $1,548 USD
As of November 6, 2026
Save $3,285 USD (68%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: $4,833 USD 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 $1,548 to $4,833, a $3,285 spread on the same certified stone. NZ Jewellers lists it at $4,833. 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
Color
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: $4,833 USD|Low: $1,536 USD|High: $4,833 USD|Avg: $2,349 USD
NZ Jewellers
Retailer 2
Retailer 3
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Retailer 5
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Retailer 12
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Retailer 19
Retailer 20
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Retailer 22
Retailer 23
Retailer 24
November 6, 2026
Retailer 24$1,548 USD
Retailer 2$1,549 USD
Retailer 10$1,780 USD
Retailer 15$1,790 USD
Retailer 12$1,829 USD
Retailer 21$1,865 USD
Retailer 11$1,980 USD
Retailer 7$1,982 USD
Retailer 9$1,982 USD
Retailer 3$2,020 USD
Retailer 4$2,046 USD
Retailer 8$2,073 USD
Retailer 6$2,119 USD
Retailer 18$2,127 USD
Retailer 13$2,151 USD
Retailer 14$2,286 USD
Retailer 19$2,292 USD
Retailer 20$2,418 USD
Retailer 22$2,635 USD
Retailer 5$2,895 USD
Retailer 16$2,910 USD
Retailer 17$2,992 USD
Retailer 23$3,472 USD
NZ Jewellers$4,833 USD

27 data points across 24 retailers

25 retailers$1,548 USD to $4,833 USD

B+
Cheapest Retailer
-
$1,548 USD
A
Retailer 2
-
$1,549 USD
View
B+
Retailer 3
-
$1,780 USD
View
B+
Retailer 4
-
$1,790 USD
View
B+
Retailer 5
-
$1,829 USD
View
Final sale: no returns
B+
Retailer 6
-
$1,865 USD
View
B+
Retailer 7
-
$1,980 USD
View
B+
Retailer 8
-
$1,982 USD
View
Retailer 9
-
$1,982 USD
View
Price last confirmed 8 days ago
B+
Retailer 10
-
$2,020 USD
View
B+
Retailer 11
-
$2,046 USD
View
B+
Retailer 12
-
$2,073 USD
View
B+
Retailer 13
-
$2,119 USD
View
B+
Retailer 14
-
$2,127 USD
View
B+
Retailer 15
-
$2,151 USD
View
B+
Retailer 16
-
$2,286 USD
View
B+
Retailer 17
-
$2,292 USD
View
B+
Retailer 18
-
$2,418 USD
View
Retailer 19
-
$2,570 USD
View
Price last confirmed 32 days ago
B+
Retailer 20
-
$2,635 USD
View
B
Retailer 21
-
$2,895 USD
View
B
Retailer 22
-
$2,910 USD
View
B
Retailer 23
-
$2,992 USD
View
B
Retailer 24
-
$3,472 USD
View
Most Expensive
C
NZ Jewellers
a8977eb8-a3da-4fd8-8ac7-0b132184bc8c · Nov 5
$4,833 USD
View
24 more retailers have this diamond
Prices start from $1,548 USDSave up to $3,285 USD

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
$1,548 USD