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Heart|Natural|GIA

0.51ct H SI1 Heart Natural Diamond

EX • H/SI1 • GIA 2544040645

Certificate GIA 2544040645

Diamond specifications and retailer prices

From €337 EUR
As of November 6, 2026
Save €111 EUR (25%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: €448 EUR at Blue Nile · As of November 5, 2026
View at Blue Nile

About this 0.51ct natural heart diamond

This 0.51ct natural heart sits in the half to three-quarter carat band, graded H 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 2544040645. Listed at 4 retailers as of November 5, 2026, with prices from €337 to €448, a €111 spread on the same certified stone. Blue Nile lists it at €448. 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

0.51
Carat
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2544040645
Dimensions5.04 × 5.55 × 3.30 mm
L/W Ratio1.10
Top View
5.04 mm5.55 mm0.51 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 2544040645
Side View
Table 59.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 59.5%

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 6
Current: €448 EUR|Low: €312 EUR|High: €518 EUR|Avg: €404 EUR|-13.5%
Blue Nile
Retailer 2
Retailer 3
Retailer 4
November 7, 2026
Retailer 3€337 EUR
Retailer 4€362 EUR
Retailer 2€414 EUR
Blue Nile€448 EUR

42 data points across 4 retailers

4 retailers€337 EUR to €448 EUR

A
Cheapest Retailer
-
€337 EUR
Final sale: no returns
A
Retailer 2
-
€362 EUR
View
A
Retailer 3
-
€414 EUR
View
Most Expensive
B+
Blue Nile
27287114 · Nov 5
€448 EUR
$500 USD
View
3 more retailers have this diamond
Prices start from €337 EURSave up to €111 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
0.51ct Heart
€337 EUR