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Heart|Natural|GIA

1.51ct I SI2 Heart Natural Diamond

EX • I/SI2 • GIA 3555615885

Certificate GIA 3555615885

Diamond specifications and retailer prices

From €2,405 EUR
As of November 4, 2026
Save €664 EUR (22%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: €4,199 EUR at Wholesale Diamonds Direct · As of October 14, 2026
View at Wholesale Diamonds Direct

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 SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 3555615885. Listed at 7 retailers as of November 4, 2026, with a 28% 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
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.91°
Pavilion angle40.12°
OriginNatural
Grading LabGIA
CertificateGIA 3555615885
Dimensions6.92 × 7.90 × 4.72 mm
L/W Ratio1.14
Culet sizeNone
Top View
6.92 mm7.90 mm1.51 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 3555615885
Side View
Table 59.0%Crown 34.91°Girdle: THN-THKPavilion 40.12°Culet: NoneDepth 59.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: €3,069 EUR|Low: €1,823 EUR|High: €4,363 EUR|Avg: €2,891 EUR|-5.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Wholesale Diamonds Direct
November 4, 2026
Retailer 10€1,823 EUR
Retailer 4€2,253 EUR
Retailer 5€2,405 EUR
Retailer 7€2,523 EUR
Retailer 3€2,619 EUR
Retailer 6€2,664 EUR
Retailer 2€2,824 EUR
Retailer 1€3,069 EUR
Retailer 9€3,231 EUR
Retailer 8€3,558 EUR
Wholesale Diamonds Direct€4,199 EUR

22 data points across 11 retailers

7 retailers€2,405 EUR to €3,069 EUR

A
Cheapest Retailer
-
€2,405 EUR
A
Retailer 2
-
€2,523 EUR
View
A
Retailer 3
-
€2,619 EUR
View
A
Retailer 4
-
€2,664 EUR
View
A
Retailer 5
-
€2,824 EUR
View
A
Retailer 6
-
€3,069 EUR
View
Most Expensive
Wholesale Diamonds Direct
419410307 · Oct 14
€4,199 EUR
$4,688 USD
View
Price last confirmed 23 days ago
6 more retailers have this diamond
Prices start from €2,405 EURSave up to €664 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
€2,405 EUR