Round|Natural|GIA

1.01ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 2566100127

Certificate GIA 2566100127

Diamond specifications and retailer prices

From €1,673 EUR
As of November 6, 2026
Save €3,022 EUR (64%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: €4,915 EUR at NZ Jewellers · As of September 28, 2026
View at NZ Jewellers

About this 1.01ct natural round diamond

This 1.01ct natural round sits in the classic one-carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2566100127. Listed at 21 retailers as of November 5, 2026, with a 181% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.01
Carat
H
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle35°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 2566100127
Dimensions6.35 × 6.40 × 4.00 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Cloud, Feather, Needle, Natural
Top View
6.35 mm6.40 mm1.01 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2566100127
Side View
Table 59.0%Crown 35°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 62.8%

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: €4,695 EUR|Low: €1,673 EUR|High: €4,816 EUR|Avg: €2,608 EUR|-2.5%
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
November 7, 2026
Retailer 8€1,673 EUR
Retailer 6€1,777 EUR
Retailer 3€1,983 EUR
Retailer 7€2,028 EUR
Retailer 10€2,226 EUR
Retailer 4€2,245 EUR
Retailer 2€2,362 EUR
Retailer 9€2,371 EUR
Retailer 13€2,391 EUR
Retailer 12€2,591 EUR
Retailer 11€2,616 EUR
Retailer 14€2,741 EUR
Retailer 5€3,944 EUR
NZ Jewellers€4,695 EUR

23 data points across 14 retailers

21 retailers€1,673 EUR to €4,695 EUR

A
Cheapest Retailer
-
€1,673 EUR
A
Retailer 2
-
€1,777 EUR
View
Final sale: no returns
A
Retailer 3
-
€1,983 EUR
View
A
Retailer 4
-
€2,028 EUR
View
A
Retailer 5
-
€2,226 EUR
View
A
Retailer 6
-
€2,245 EUR
View
Retailer 7
-
€2,351 EUR
View
Price last confirmed 51 days ago
Retailer 8
-
€2,351 EUR
View
Price last confirmed 40 days ago
B+
Retailer 9
-
€2,362 EUR
View
B+
Retailer 10
-
€2,371 EUR
View
B+
Retailer 11
-
€2,391 EUR
View
B+
Retailer 12
-
€2,591 EUR
View
B+
Retailer 13
-
€2,616 EUR
View
Retailer 14
-
€2,634 EUR
View
Price last confirmed 31 days ago
Retailer 15
-
€2,713 EUR
View
Price last confirmed 39 days ago
Retailer 16
-
€2,713 EUR
View
Price last confirmed 51 days ago
B+
Retailer 17
-
€2,741 EUR
View
B
Retailer 18
-
€3,944 EUR
View
B
Retailer 19
-
€4,695 EUR
View
Retailer 20
-
€4,915 EUR
View
Price last confirmed 50 days ago
Most Expensive
NZ Jewellers
431de488-9f46-45fd-8a26-4ecad8c084cf · Sep 28
€4,915 EUR
$5,488 USD
View
Price last confirmed 39 days ago
20 more retailers have this diamond
Prices start from €1,673 EURSave up to €3,022 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
1.01ct Round
€1,673 EUR