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Heart|Natural|HRD

1.21ct K SI2 Heart Natural Diamond

K/SI2 • HRD 260000134464

Certificate HRD 260000134464

Diamond specifications and retailer prices

From €1,267 EUR
As of November 6, 2026
Save €1,130 EUR (47%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: €3,348 EUR at NZ Jewellers · As of October 24, 2026
View at NZ Jewellers

About this 1.21ct natural heart diamond

This 1.21ct natural heart sits in the classic one-carat band, graded K colour (faint-tinted) and SI2 clarity (slightly-included) and certified by HRD 260000134464. Listed at 6 retailers as of November 4, 2026, with a 89% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.21
Carat
K
Colour
SI2
Clarity
-
Cut

Specifications

Cut
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabHRD
CertificateHRD 260000134464
Dimensions6.53 × 7.24 × 4.23 mm
L/W Ratio1.11
Girdle conditionFaceted
Top View
6.53 mm7.24 mm1.21 ctK / SI2
OriginNatural
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateHRD 260000134464
Side View
Table 60.0%CrownGirdle: ThickPavilionCulet: NoneDepth 58.4%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: €3,348 EUR|Low: €1,067 EUR|High: €3,348 EUR|Avg: €1,949 EUR
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 7€1,067 EUR
Retailer 5€1,267 EUR
Retailer 6€1,442 EUR
Retailer 2€1,803 EUR
Retailer 4€1,993 EUR
Retailer 3€2,398 EUR
NZ Jewellers€3,348 EUR

24 data points across 7 retailers

6 retailers€1,267 EUR to €2,398 EUR

B+
Cheapest Retailer
-
€1,267 EUR
Final sale: no returns
B+
Retailer 2
-
€1,442 EUR
View
B+
Retailer 3
-
€1,803 EUR
View
B
Retailer 4
-
€1,993 EUR
View
B
Retailer 5
-
€2,398 EUR
View
Most Expensive
NZ Jewellers
dbdb4441-7847-4045-9be3-29d46c5a435d · Oct 24
€3,348 EUR
$3,738 USD
View
Price last confirmed 13 days ago
5 more retailers have this diamond
Prices start from €1,267 EURSave up to €1,130 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.

B+
1.21ct Heart
€1,267 EUR