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1.00ct J SI1 Round Natural Diamond

EX • J/SI1 • HRD 260000116770

Certificate HRD 260000116770

Diamond specifications and retailer prices

From €1,015 EUR
As of November 6, 2026
Save €2,279 EUR (69%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: €3,294 EUR 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 J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by HRD 260000116770. Listed at 15 retailers as of November 5, 2026, with prices from €1,015 to €3,294, a €2,279 spread on the same certified stone. NZ Jewellers lists it at €3,294. 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
J
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.6°
Pavilion angle40.8°
OriginNatural
Grading LabHRD
CertificateHRD 260000116770
Dimensions6.34 × 6.39 × 4.01 mm
L/W Ratio1.01
Girdle conditionFaceted
Top View
6.34 mm6.39 mm1.00 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateHRD 260000116770
Side View
Table 56.0%Crown 36.6°Girdle: MED-MEDPavilion 40.8°Culet: NoneDepth 62.9%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: €3,294 EUR|Low: €1,015 EUR|High: €3,379 EUR|Avg: €1,695 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 6, 2026
Retailer 2€1,015 EUR
Retailer 9€1,238 EUR
Retailer 4€1,246 EUR
Retailer 12€1,264 EUR
Retailer 5€1,351 EUR
Retailer 13€1,412 EUR
Retailer 7€1,515 EUR
Retailer 3€1,558 EUR
Retailer 8€1,575 EUR
Retailer 11€1,761 EUR
Retailer 6€1,946 EUR
Retailer 14€2,229 EUR
Retailer 10€2,360 EUR
NZ Jewellers€3,294 EUR

34 data points across 14 retailers

15 retailers€1,015 EUR to €3,294 EUR

A
Cheapest Retailer
-
€1,015 EUR
A
Retailer 2
-
€1,238 EUR
View
A
Retailer 3
-
€1,246 EUR
View
Final sale: no returns
A
Retailer 4
-
€1,264 EUR
View
A
Retailer 5
-
€1,351 EUR
View
A
Retailer 6
-
€1,412 EUR
View
B+
Retailer 7
-
€1,507 EUR
View
A
Retailer 8
-
€1,515 EUR
View
B+
Retailer 9
-
€1,558 EUR
View
A
Retailer 10
-
€1,575 EUR
View
B+
Retailer 11
-
€1,761 EUR
View
B+
Retailer 12
-
€1,946 EUR
View
B
Retailer 13
-
€2,229 EUR
View
B
Retailer 14
-
€2,360 EUR
View
Most Expensive
B
NZ Jewellers
09ec0cc1-6dc2-4b6c-825e-9b34c40caf83 · Nov 5
€3,294 EUR
$3,678 USD
View
14 more retailers have this diamond
Prices start from €1,015 EURSave up to €2,279 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 Round
€1,015 EUR