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Round|Natural|GIA

1.05ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 2556452598

Certificate GIA 2556452598

Diamond specifications and retailer prices

From €1,548 EUR
As of November 6, 2026
Save €2,052 EUR (57%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: €4,434 EUR at NZ Jewellers · As of September 19, 2026
View at NZ Jewellers

About this 1.05ct natural round diamond

This 1.05ct natural round sits in the classic one-carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2556452598. Listed at 20 retailers as of November 2, 2026, with a 133% 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

1.05
Carat
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 2556452598
Dimensions6.46 × 6.50 × 4.06 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Top View
6.46 mm6.50 mm1.05 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2556452598
Side View
Table 57.0%Crown 35.5°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.7%

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: €2,144 EUR|Low: €1,548 EUR|High: €3,759 EUR|Avg: €2,178 EUR|-1.0%
Retailer 1
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
November 6, 2026
Retailer 16€1,548 EUR
Retailer 5€1,575 EUR
Retailer 4€1,710 EUR
Retailer 11€1,762 EUR
Retailer 15€1,763 EUR
Retailer 2€1,875 EUR
Retailer 13€1,896 EUR
Retailer 6€2,030 EUR
Retailer 8€2,077 EUR
Retailer 1€2,144 EUR
Retailer 9€2,242 EUR
Retailer 10€2,360 EUR
Retailer 7€2,396 EUR
Retailer 14€2,419 EUR
Retailer 12€2,982 EUR
Retailer 3€3,600 EUR

30 data points across 16 retailers

20 retailers€1,548 EUR to €3,600 EUR

A
Cheapest Retailer
-
€1,548 EUR
Retailer 2
-
€1,575 EUR
View
Price last confirmed 17 days ago
Retailer 3
-
€1,710 EUR
View
Price last confirmed 11 days ago
A
Retailer 4
-
€1,762 EUR
View
A
Retailer 5
-
€1,763 EUR
View
A
Retailer 6
-
€1,875 EUR
View
A
Retailer 7
-
€1,896 EUR
View
Final sale: no returns
Retailer 8
-
€2,077 EUR
View
Price last confirmed 17 days ago
A
Retailer 9
-
€2,100 EUR
View
A
Retailer 10
-
€2,144 EUR
View
Retailer 11
-
€2,219 EUR
View
Price last confirmed 22 days ago
B+
Retailer 12
-
€2,242 EUR
View
B+
Retailer 13
-
€2,360 EUR
View
Retailer 14
-
€2,396 EUR
View
Price last confirmed 19 days ago
B+
Retailer 15
-
€2,419 EUR
View
Retailer 16
-
€2,447 EUR
View
Price last confirmed 48 days ago
B+
Retailer 17
-
€2,982 EUR
View
B
Retailer 18
-
€3,600 EUR
View
Retailer 19
-
€4,434 EUR
View
Price last confirmed 20 days ago
Most Expensive
NZ Jewellers
05f53ec0-77c7-4a2a-a7d4-89ef61e356d8 · Sep 19
€4,434 EUR
$4,950 USD
View
Price last confirmed 47 days ago
19 more retailers have this diamond
Prices start from €1,548 EURSave up to €2,052 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
1.05ct Round
€1,548 EUR