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Heart|Natural|GIA

0.55ct G SI1 Heart Natural Diamond

EX • G/SI1 • GIA 6535435406

Certificate GIA 6535435406

Diamond specifications and retailer prices

From £341 GBP
As of November 6, 2026
Save £108 GBP (24%) vs most expensive(unlock to see where)
4 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 G 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 6535435406. Listed at 4 retailers as of November 6, 2026, with prices from £341 to £448, a £108 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
G
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6535435406
Dimensions5.79 × 4.93 × 3.41 mm
L/W Ratio1.17
Top View
5.79 mm4.93 mm0.55 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6535435406
Side View
Table 57.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 58.9%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: £448 GBP|Low: £326 GBP|High: £516 GBP|Avg: £409 GBP|-13.0%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
November 5, 2026
Retailer 3£341 GBP
Retailer 4£350 GBP
Retailer 2£436 GBP
Brilliant Earth£448 GBP

40 data points across 4 retailers

4 retailers£341 GBP to £448 GBP

A
Cheapest Retailer
-
£341 GBP
A
Retailer 2
-
£350 GBP
View
Final sale: no returns
B+
Retailer 3
-
£436 GBP
View
Most Expensive
B+
Brilliant Earth
15776205A · Nov 6
£448 GBP
$600 USD
View
3 more retailers have this diamond
Prices start from £341 GBPSave up to £108 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
£341 GBP