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Heart|Natural|GIA

1.51ct K SI1 Heart Natural Diamond

EX • K/SI1 • GIA 2548532604

Certificate GIA 2548532604

Diamond specifications and retailer prices

From €2,165 EUR
As of November 6, 2026
Save €425 EUR (16%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: €2,590 EUR at Blue Nile · As of November 5, 2026
View at Blue Nile

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 GIA 2548532604. Listed at 7 retailers as of November 5, 2026, with prices from €2,165 to €2,590, a €425 spread on the same certified stone. Blue Nile lists it at €2,590. 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
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2548532604
Dimensions6.75 × 8.07 × 4.84 mm
L/W Ratio1.20
Top View
6.75 mm8.07 mm1.51 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2548532604
Side View
Table 61.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 60.0%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: €2,590 EUR|Low: €1,993 EUR|High: €2,980 EUR|Avg: €2,453 EUR|-13.1%
Blue Nile
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 7, 2026
Retailer 5€2,165 EUR
Retailer 4€2,192 EUR
Retailer 7€2,220 EUR
Retailer 3€2,276 EUR
Retailer 2€2,319 EUR
Retailer 6€2,516 EUR
Blue Nile€2,590 EUR

43 data points across 7 retailers

7 retailers€2,165 EUR to €2,590 EUR

A
Cheapest Retailer
-
€2,165 EUR
A
Retailer 2
-
€2,192 EUR
View
Final sale: no returns
A
Retailer 3
-
€2,220 EUR
View
A
Retailer 4
-
€2,276 EUR
View
A
Retailer 5
-
€2,319 EUR
View
A
Retailer 6
-
€2,516 EUR
View
Most Expensive
A
Blue Nile
28033762 · Nov 5
€2,590 EUR
$2,892 USD
View
6 more retailers have this diamond
Prices start from €2,165 EURSave up to €425 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
€2,165 EUR