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Heart|Natural|GIA

0.55ct E SI1 Heart Natural Diamond

EX • E/SI1 • GIA 5533430664

Certificate GIA 5533430664

Diamond specifications and retailer prices

From £345 GBP
As of November 6, 2026
Save £103 GBP (23%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £448 GBP at Brilliant Earth · As of November 6, 2026
View at Brilliant Earth

About this 0.55ct natural heart diamond

This 0.55ct natural heart sits in the half to three-quarter carat band, graded E 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 5533430664. Listed at 5 retailers as of November 6, 2026, with prices from £345 to £448, a £103 spread on the same certified stone. Brilliant Earth 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

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

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 5533430664
Dimensions5.81 × 4.92 × 3.47 mm
L/W Ratio1.18
Top View
5.81 mm4.92 mm0.55 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 5533430664
Side View
Table 58.0%CrownGirdle: THN-THKPavilionCulet: NoneDepth 59.6%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: £448 GBP|Low: £319 GBP|High: £508 GBP|Avg: £406 GBP|-11.8%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 5, 2026
Retailer 5£345 GBP
Retailer 3£354 GBP
Retailer 4£387 GBP
Retailer 2£442 GBP
Brilliant Earth£448 GBP

41 data points across 5 retailers

5 retailers£345 GBP to £448 GBP

A
Cheapest Retailer
-
£345 GBP
A
Retailer 2
-
£354 GBP
View
Final sale: no returns
A
Retailer 3
-
£387 GBP
View
A
Retailer 4
-
£442 GBP
View
Most Expensive
A
Brilliant Earth
15735843A · Nov 6
£448 GBP
$600 USD
View
4 more retailers have this diamond
Prices start from £345 GBPSave up to £103 GBP

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
£345 GBP