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Heart|Natural|HRD

1.51ct K SI1 Heart Natural Diamond

EX • K/SI1 • HRD 250000276766

Certificate HRD 250000276766

Diamond specifications and retailer prices

From €2,019 EUR
As of November 1, 2026
Save €2,202 EUR (52%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: €4,221 EUR at NZ Jewellers · As of November 3, 2026
View at NZ Jewellers

About this 1.51ct natural heart diamond

This 1.51ct natural heart sits in the one-and-a-half to two carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by HRD 250000276766. Listed at 5 retailers as of November 1, 2026, with prices from €2,019 to €4,221, a €2,202 spread on the same certified stone. NZ Jewellers lists it at €4,221. 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

1.51
Carat
K
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle36.17°
Pavilion angle41.2°
OriginNatural
Grading LabHRD
CertificateHRD 250000276766
Dimensions7.20 × 8.00 × 4.75 mm
L/W Ratio1.11
Girdle conditionMedium
Top View
7.20 mm8.00 mm1.51 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateHRD 250000276766
Side View
Table 59.0%Crown 36.17°GirdlePavilion 41.2°CuletDepth 59.4%

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 1
Current: €4,221 EUR|Low: €2,019 EUR|High: €4,306 EUR|Avg: €2,735 EUR|-2.0%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 1, 2026
Retailer 3€2,019 EUR
Retailer 5€2,060 EUR
Retailer 4€2,112 EUR
Retailer 7€2,438 EUR
Retailer 6€2,441 EUR
Retailer 2€3,537 EUR
NZ Jewellers€4,221 EUR

11 data points across 7 retailers

5 retailers€2,019 EUR to €4,221 EUR

A
Cheapest Retailer
-
€2,019 EUR
B+
Retailer 2
-
€2,060 EUR
View
A
Retailer 3
-
€2,112 EUR
View
B+
Retailer 4
-
€3,537 EUR
View
Most Expensive
B
NZ Jewellers
b2e90259-6d77-4518-8b11-0fa4efcef192 · Nov 3
€4,221 EUR
$4,713 USD
View
4 more retailers have this diamond
Prices start from €2,019 EURSave up to €2,202 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
1.51ct Heart
€2,019 EUR