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Heart|Natural|GIA

0.73ct E SI1 Heart Natural Diamond

EX • E/SI1 • GIA 6555205632

Certificate GIA 6555205632

Diamond specifications and retailer prices

From £566 GBP
As of November 4, 2026
Save £557 GBP (50%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £2,145 GBP at NZ Jewellers · As of October 6, 2026
View at NZ Jewellers

About this 0.73ct natural heart diamond

This 0.73ct 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 6555205632. Listed at 9 retailers as of November 4, 2026, with a 98% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

0.73
Carat
E
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle35.02°
Pavilion angle45.06°
OriginNatural
Grading LabGIA
CertificateGIA 6555205632
Dimensions5.42 × 6.20 × 3.85 mm
L/W Ratio1.14
Top View
5.42 mm6.20 mm0.73 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6555205632
Side View
Table 58.0%Crown 35.02°GirdlePavilion 45.06°Culet: NoneDepth 62.2%

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 4
Current: £741 GBP|Low: £566 GBP|High: £1,353 GBP|Avg: £908 GBP|-18.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 6£566 GBP
Retailer 2£731 GBP
Retailer 1£741 GBP
Retailer 5£796 GBP
Retailer 3£916 GBP
Retailer 8£939 GBP
Retailer 7£1,049 GBP
Retailer 4£1,122 GBP

43 data points across 8 retailers

9 retailers£566 GBP to £1,122 GBP

A
Cheapest Retailer
-
£566 GBP
Final sale: no returns
B+
Retailer 2
-
£731 GBP
View
B+
Retailer 3
-
£741 GBP
View
B+
Retailer 4
-
£796 GBP
View
B+
Retailer 5
-
£916 GBP
View
B+
Retailer 6
-
£985 GBP
View
Retailer 7
-
£1,049 GBP
View
Price last confirmed 32 days ago
B
Retailer 8
-
£1,122 GBP
View
Most Expensive
NZ Jewellers
646975d8-ce33-41a8-bd9f-e13efbbf19f7 · Oct 6
£2,145 GBP
$2,871 USD
View
Price last confirmed 31 days ago
8 more retailers have this diamond
Prices start from £566 GBPSave up to £557 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
0.73ct Heart
£566 GBP