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Heart|Natural|GIA

1.51ct I SI1 Heart Natural Diamond

ID • I/SI1 • GIA 6552652410

Certificate GIA 6552652410

Diamond specifications and retailer prices

From €3,719 EUR
As of November 6, 2026
Save €4,097 EUR (52%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: €8,150 EUR at NZ Jewellers · As of October 21, 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 6552652410. Listed at 16 retailers as of November 4, 2026, with a 110% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishVery Good
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6552652410
Dimensions7.87 × 6.97 × 4.55 mm
L/W Ratio1.13
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather, Crystal, Needle
Top View
7.87 mm6.97 mm1.51 ctI / SI1
OriginNatural
CutIdeal
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateGIA 6552652410
Side View
Table 61.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 57.9%

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: €8,150 EUR|Low: €3,395 EUR|High: €8,150 EUR|Avg: €5,468 EUR
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
November 6, 2026
Retailer 4€3,719 EUR
Retailer 5€4,075 EUR
Retailer 3€4,415 EUR
Retailer 2€4,643 EUR
Retailer 6€4,777 EUR
Retailer 10€4,998 EUR
Retailer 11€4,998 EUR
Retailer 13€5,094 EUR
Retailer 12€5,159 EUR
Retailer 7€5,537 EUR
Retailer 8€6,003 EUR
Retailer 9€7,816 EUR
NZ Jewellers€8,150 EUR

38 data points across 13 retailers

16 retailers€3,719 EUR to €7,816 EUR

A
Cheapest Retailer
-
€3,719 EUR
A
Retailer 2
-
€3,736 EUR
View
B+
Retailer 3
-
€4,407 EUR
View
Retailer 4
-
€4,415 EUR
View
Price last confirmed 18 days ago
Retailer 5
-
€4,415 EUR
View
Price last confirmed 22 days ago
B+
Retailer 6
-
€4,643 EUR
View
B+
Retailer 7
-
€4,777 EUR
View
B+
Retailer 8
-
€4,998 EUR
View
B+
Retailer 9
-
€4,998 EUR
View
B+
Retailer 10
-
€5,051 EUR
View
Retailer 11
-
€5,094 EUR
View
Price last confirmed 17 days ago
B
Retailer 12
-
€5,159 EUR
View
B+
Retailer 13
-
€5,537 EUR
View
B
Retailer 14
-
€6,003 EUR
View
B
Retailer 15
-
€7,816 EUR
View
Most Expensive
NZ Jewellers
5f69c31b-1f01-42cc-8698-0ea82b4976e0 · Oct 21
€8,150 EUR
$9,099 USD
View
Price last confirmed 16 days ago
15 more retailers have this diamond
Prices start from €3,719 EURSave up to €4,097 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
€3,719 EUR