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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 $678 CAD
As of November 6, 2026
Save $196 CAD (22%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $873 CAD 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 $678 to $873, a $196 spread on the same certified stone. Blue Nile lists it at $873. 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
Color
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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $873 CAD|Low: $595 CAD|High: $949 CAD|Avg: $787 CAD|-8.0%
Blue Nile
Retailer 2
Retailer 3
Retailer 4
November 6, 2026
Retailer 3$678 CAD
Retailer 4$740 CAD
Retailer 2$844 CAD
Blue Nile$873 CAD

41 data points across 4 retailers

4 retailers$678 CAD to $873 CAD

A
Cheapest Retailer
-
$678 CAD
Final sale: no returns
A
Retailer 2
-
$740 CAD
View
B+
Retailer 3
-
$844 CAD
View
Most Expensive
B+
Blue Nile
29212920 · Nov 5
$873 CAD
$621 USD
View
3 more retailers have this diamond
Prices start from $678 CADSave up to $196 CAD

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
$678 CAD