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Heart|Natural|GIA

1.51ct D SI2 Heart Natural Diamond

ID • D/SI2 • GIA 2231718566

Certificate GIA 2231718566

Diamond specifications and retailer prices

From €4,021 EUR
£3,537 GBP
As of November 1, 2026
Save €3,413 EUR (46%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: €7,434 EUR at NZ Jewellers · As of October 30, 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 D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2231718566. Listed at 6 retailers as of October 30, 2026, with prices from €4,021 to €7,434, a €3,413 spread on the same certified stone. NZ Jewellers lists it at €7,434. 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
D
Color
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.42°
Pavilion angle42.37°
OriginNatural
Grading LabGIA
CertificateGIA 2231718566
Dimensions6.75 × 8.02 × 4.94 mm
L/W Ratio1.19
Girdle conditionThick
Key to symbols
Crystal, Feather, Knot, Needle
Top View
6.75 mm8.02 mm1.51 ctD / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2231718566
Side View
Table 61.0%Crown 37.42°Girdle: STK-THKPavilion 42.37°Culet: NoneDepth 61.6%

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: €7,434 EUR|Low: €3,945 EUR|High: €7,487 EUR|Avg: €5,091 EUR|-0.7%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 1, 2026
Retailer 8€3,945 EUR
Retailer 2€4,021 EUR
Retailer 5€4,267 EUR
Retailer 6€4,267 EUR
Retailer 7€4,386 EUR
Retailer 9€4,568 EUR
Retailer 11€4,948 EUR
Retailer 3€5,335 EUR
Retailer 10€5,339 EUR
Retailer 4€6,796 EUR
NZ Jewellers€7,434 EUR

31 data points across 11 retailers

6 retailers€4,021 EUR to €7,434 EUR

A
Cheapest Retailer
-
€4,021 EUR
£3,537 GBP
A
Retailer 2
-
€4,267 EUR
$4,767 USD
View
A
Retailer 3
-
€4,267 EUR
$4,767 USD
View
A
Retailer 4
-
€4,386 EUR
$4,900 USD
View
B+
Retailer 5
-
€6,796 EUR
£5,978 GBP
View
Most Expensive
B+
NZ Jewellers
70efa35e-7227-4311-82c0-9c3eb24d02ea · Oct 30
€7,434 EUR
$8,305 USD
View
5 more retailers have this diamond
Prices start from €4,021 EURSave up to €3,413 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
€4,021 EUR