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Heart|Natural|GIA

1.51ct I SI1 Heart Natural Diamond

EX • I/SI1 • GIA 6555506948

Certificate GIA 6555506948

Diamond specifications and retailer prices

From €3,118 EUR
As of November 6, 2026
Save €4,178 EUR (57%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: €7,296 EUR at NZ Jewellers · As of November 5, 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6555506948. Listed at 18 retailers as of November 5, 2026, with prices from €3,118 to €7,296, a €4,178 spread on the same certified stone. NZ Jewellers lists it at €7,296. 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
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6555506948
Dimensions7.00 × 7.88 × 4.58 mm
L/W Ratio1.13
Girdle conditionFaceted
Top View
7.00 mm7.88 mm1.51 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6555506948
Side View
Table 59.0%CrownGirdle: MED-THKPavilionCulet: NDepth 58.2%

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: €7,296 EUR|Low: €3,072 EUR|High: €7,447 EUR|Avg: €4,413 EUR|-2.0%
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
Retailer 15
Retailer 16
Retailer 17
November 6, 2026
Retailer 16€3,118 EUR
Retailer 4€3,131 EUR
Retailer 14€3,329 EUR
Retailer 6€3,497 EUR
Retailer 8€3,501 EUR
Retailer 3€3,502 EUR
Retailer 2€3,543 EUR
Retailer 9€3,605 EUR
Retailer 15€3,878 EUR
Retailer 11€3,892 EUR
Retailer 10€3,952 EUR
Retailer 5€4,015 EUR
Retailer 12€5,109 EUR
Retailer 17€5,311 EUR
Retailer 7€6,498 EUR
Retailer 13€6,651 EUR
NZ Jewellers€7,296 EUR

21 data points across 17 retailers

18 retailers€3,118 EUR to €7,296 EUR

A
Cheapest Retailer
-
€3,118 EUR
A
Retailer 2
-
€3,131 EUR
View
A
Retailer 3
-
€3,329 EUR
View
A
Retailer 4
-
€3,497 EUR
View
A
Retailer 5
-
€3,501 EUR
View
A
Retailer 6
-
€3,502 EUR
View
Final sale: no returns
A
Retailer 7
-
€3,543 EUR
View
A
Retailer 8
-
€3,605 EUR
View
A
Retailer 9
-
€3,878 EUR
View
A
Retailer 10
-
€3,892 EUR
View
A
Retailer 11
-
€3,952 EUR
View
A
Retailer 12
-
€4,015 EUR
View
Retailer 13
-
€4,513 EUR
View
Price last confirmed 29 days ago
B+
Retailer 14
-
€5,109 EUR
View
B
Retailer 15
-
€5,311 EUR
View
B
Retailer 16
-
€6,498 EUR
View
B
Retailer 17
-
€6,651 EUR
View
Most Expensive
B
NZ Jewellers
28ec3ddb-0863-4b50-998a-7b353d1e8e5b · Nov 5
€7,296 EUR
$8,146 USD
View
17 more retailers have this diamond
Prices start from €3,118 EURSave up to €4,178 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
€3,118 EUR