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Heart|Natural|GIA

0.81ct E SI1 Heart Natural Diamond

EX • E/SI1 • GIA 3555378724

Certificate GIA 3555378724

Diamond specifications and retailer prices

From £692 GBP
HK$7,200 HKD
As of October 29, 2026
Save £649 GBP (48%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £2,242 GBP at NZ Jewellers · As of September 25, 2026
View at NZ Jewellers

About this 0.81ct natural heart diamond

This 0.81ct natural heart sits in the just-under-one-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 3555378724. Listed at 13 retailers as of October 23, 2026, with a 94% 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

0.81
Carat
E
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 3555378724
Dimensions5.65 × 6.60 × 3.86 mm
L/W Ratio1.17
Girdle conditionFaceted
Top View
5.65 mm6.60 mm0.81 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 3555378724
Side View
Table 57.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 58.5%

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: Oct 29
Current: £829 GBP|Low: £663 GBP|High: £1,703 GBP|Avg: £1,039 GBP|-2.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
October 29, 2026
Retailer 10£692 GBP
Retailer 13£816 GBP
Retailer 1£829 GBP
Retailer 8£853 GBP
Retailer 9£880 GBP
Retailer 7£894 GBP
Retailer 12£967 GBP
Retailer 4£980 GBP
Retailer 3£1,027 GBP
Retailer 2£1,067 GBP
Retailer 6£1,158 GBP
Retailer 5£1,312 GBP
Retailer 11£1,341 GBP
Retailer 14£1,637 GBP

32 data points across 14 retailers

13 retailers£692 GBP to £1,341 GBP

A
Cheapest Retailer
-
£692 GBP
HK$7,200 HKD
A
Retailer 2
-
£816 GBP
$1,087 USD
View
Final sale: no returns
A
Retailer 3
-
£829 GBP
€1,052 EUR
View
A
Retailer 4
-
£853 GBP
$1,136 USD
View
A
Retailer 5
-
£880 GBP
$1,172 USD
View
A
Retailer 6
-
£894 GBP
View
A
Retailer 7
-
£967 GBP
SGD 1,740 SGD
View
Retailer 8
-
£1,067 GBP
View
Price last confirmed 21 days ago
Retailer 9
-
£1,158 GBP
A$2,372 AUD
View
Price last confirmed 26 days ago
Retailer 10
-
£1,312 GBP
ZAR 28,227 ZAR
View
Price last confirmed 25 days ago
B+
Retailer 11
-
£1,341 GBP
$1,786 USD
View
Retailer 12
-
£1,637 GBP
View
Price last confirmed 22 days ago
Most Expensive
NZ Jewellers
49942fc4-5d3b-44b1-8267-ff74422abb4f · Sep 25
£2,242 GBP
$2,985 USD
View
Price last confirmed 34 days ago
12 more retailers have this diamond
Prices start from £692 GBPSave up to £649 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
0.81ct Heart
£692 GBP