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Heart|Natural|GIA

0.55ct G SI1 Heart Natural Diamond

GD • G/SI1 • GIA 5543880291

Certificate GIA 5543880291

Diamond specifications and retailer prices

From £344 GBP
As of November 6, 2026
Save £112 GBP (25%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £456 GBP 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 G colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 5543880291. Listed at 4 retailers as of November 5, 2026, with prices from £344 to £456, a £112 spread on the same certified stone. Blue Nile lists it at £456. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.55
Carat
G
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5543880291
Dimensions4.98 × 5.79 × 3.38 mm
L/W Ratio1.16
Top View
4.98 mm5.79 mm0.55 ctG / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryGood
FluorescenceNone
CertificateGIA 5543880291
Side View
Table 57.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 58.5%

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: £456 GBP|Low: £323 GBP|High: £516 GBP|Avg: £410 GBP|-11.6%
Blue Nile
Retailer 2
Retailer 3
Retailer 4
November 5, 2026
Retailer 3£344 GBP
Retailer 4£353 GBP
Retailer 2£439 GBP
Blue Nile£456 GBP

40 data points across 4 retailers

4 retailers£344 GBP to £456 GBP

A
Cheapest Retailer
-
£344 GBP
A
Retailer 2
-
£353 GBP
View
Final sale: no returns
B+
Retailer 3
-
£439 GBP
View
Most Expensive
B+
Blue Nile
28660552 · Nov 5
£456 GBP
$610 USD
View
3 more retailers have this diamond
Prices start from £344 GBPSave up to £112 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
£344 GBP