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Heart|Natural|GIA

0.55ct F SI1 Heart Natural Diamond

EX • F/SI1 • GIA 6551318492

Certificate GIA 6551318492

Diamond specifications and retailer prices

From €432 EUR
As of November 6, 2026
Save €124 EUR (22%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: €556 EUR at Blue Nile · As of November 5, 2026
View at Blue Nile

About this 0.55ct natural heart diamond

This 0.55ct natural heart sits in the half to three-quarter carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6551318492. Listed at 4 retailers as of November 5, 2026, with prices from €432 to €556, a €124 spread on the same certified stone. Blue Nile lists it at €556. 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

0.55
Carat
F
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6551318492
Dimensions4.97 × 5.79 × 3.41 mm
L/W Ratio1.16
Culet sizeNone
Key to symbols
Cloud, Crystal, Feather
Top View
4.97 mm5.79 mm0.55 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6551318492
Side View
Table 60.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 58.9%

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: €556 EUR|Low: €379 EUR|High: €605 EUR|Avg: €501 EUR|-8.0%
Blue Nile
Retailer 2
Retailer 3
Retailer 4
November 7, 2026
Retailer 3€432 EUR
Retailer 4€471 EUR
Retailer 2€537 EUR
Blue Nile€556 EUR

42 data points across 4 retailers

4 retailers€432 EUR to €556 EUR

A
Cheapest Retailer
-
€432 EUR
Final sale: no returns
A
Retailer 2
-
€471 EUR
View
B+
Retailer 3
-
€537 EUR
View
Most Expensive
B+
Blue Nile
29212920 · Nov 5
€556 EUR
$621 USD
View
3 more retailers have this diamond
Prices start from €432 EURSave up to €124 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
0.55ct Heart
€432 EUR