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Radiant|Natural|GIA

1.00ct H SI1 Radiant Natural Diamond

GD • H/SI1 • GIA 2556511021

Certificate GIA 2556511021

Diamond specifications and retailer prices

From €1,678 EUR
As of November 6, 2026
Save €3,063 EUR (65%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: €4,741 EUR at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1ct natural radiant diamond

This 1ct natural radiant sits in the classic one-carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 2556511021. Listed at 21 retailers as of November 5, 2026, with prices from €1,678 to €4,741, a €3,063 spread on the same certified stone. NZ Jewellers lists it at €4,741. 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 (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2556511021
Dimensions7.71 × 4.78 × 3.20 mm
L/W Ratio1.61
Girdle conditionPolished
Culet sizeNone
Key to symbols
Feather, Needle, Pinpoint
Top View
7.71 mm4.78 mm1.00 ctH / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2556511021
Side View
Table 69.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 66.8%

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: €4,741 EUR|Low: €1,601 EUR|High: €4,741 EUR|Avg: €2,425 EUR|+5.1%
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
November 7, 2026
Retailer 16€1,678 EUR
Retailer 7€1,988 EUR
Retailer 4€2,003 EUR
Retailer 6€2,049 EUR
Retailer 14€2,078 EUR
Retailer 10€2,093 EUR
Retailer 11€2,146 EUR
Retailer 2€2,235 EUR
Retailer 5€2,268 EUR
Retailer 12€2,356 EUR
Retailer 13€2,382 EUR
Retailer 17€2,393 EUR
Retailer 15€2,553 EUR
Retailer 19€2,597 EUR
Retailer 8€2,611 EUR
Retailer 18€2,628 EUR
Retailer 3€2,768 EUR
Retailer 9€3,738 EUR
NZ Jewellers€4,741 EUR

17 data points across 19 retailers

21 retailers€1,678 EUR to €4,741 EUR

A
Cheapest Retailer
-
€1,678 EUR
B+
Retailer 2
-
€1,988 EUR
View
B+
Retailer 3
-
€2,003 EUR
View
B+
Retailer 4
-
€2,049 EUR
View
B+
Retailer 5
-
€2,078 EUR
View
Final sale: no returns
B+
Retailer 6
-
€2,093 EUR
View
Retailer 7
-
€2,146 EUR
View
Price last confirmed 9 days ago
B
Retailer 8
-
€2,235 EUR
View
B
Retailer 9
-
€2,268 EUR
View
B
Retailer 10
-
€2,356 EUR
View
B
Retailer 11
-
€2,382 EUR
View
B
Retailer 12
-
€2,393 EUR
View
Retailer 13
-
€2,532 EUR
View
Price last confirmed 62 days ago
B
Retailer 14
-
€2,553 EUR
View
B
Retailer 15
-
€2,597 EUR
View
B
Retailer 16
-
€2,611 EUR
View
B
Retailer 17
-
€2,628 EUR
View
Retailer 18
-
€2,672 EUR
View
Price last confirmed 31 days ago
B
Retailer 19
-
€2,768 EUR
View
B
Retailer 20
-
€3,738 EUR
View
Most Expensive
C
NZ Jewellers
ddff99e5-3010-47f4-a91f-cf2cb293f2eb · Nov 5
€4,741 EUR
$5,293 USD
View
20 more retailers have this diamond
Prices start from €1,678 EURSave up to €3,063 EUR

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 Radiant
€1,678 EUR