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Heart|Natural|GIA

0.81ct I SI1 Heart Natural Diamond

EX • I/SI1 • GIA 6432541353

Certificate GIA 6432541353

Diamond specifications and retailer prices

From £1,095 GBP
$1,470 USD
As of November 2, 2026
Save £1,048 GBP (49%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £2,144 GBP at MOH London · As of November 2, 2026
View at MOH London

About this 0.81ct natural heart diamond

This 0.81ct natural heart sits in the just-under-one-carat band, graded I 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 6432541353. Listed at 6 retailers as of November 2, 2026, with prices from £1,095 to £2,144, a £1,048 spread on the same certified stone. MOH London lists it at £2,144. 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
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
Crown angle46.18°
Pavilion angle34.32°
OriginNatural
Grading LabGIA
CertificateGIA 6432541353
Dimensions5.90 × 6.55 × 3.55 mm
L/W Ratio1.11
Top View
5.90 mm6.55 mm0.81 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6432541353
Side View
Table 60.0%Crown 46.18°Girdle: THN-THKPavilion 34.32°Culet: NoneDepth 54.3%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: £2,144 GBP|Low: £1,168 GBP|High: £2,169 GBP|Avg: £1,523 GBP|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 2, 2026
Retailer 6£1,209 GBP
Retailer 5£1,215 GBP
Retailer 2£1,231 GBP
Retailer 4£1,635 GBP
Retailer 3£1,711 GBP
MOH London£2,144 GBP

39 data points across 6 retailers

6 retailers£1,095 GBP to £2,144 GBP

B+
Cheapest Retailer
-
£1,095 GBP
$1,470 USD
B+
Retailer 2
-
£1,215 GBP
$1,631 USD
View
B+
Retailer 3
-
£1,231 GBP
View
Retailer 4
-
£1,635 GBP
A$3,376 AUD
View
Price last confirmed 28 days ago
B
Retailer 5
-
£1,711 GBP
€2,187 EUR
View
Most Expensive
B
MOH London
D1D69817E · Nov 2
£2,144 GBP
View
5 more retailers have this diamond
Prices start from £1,095 GBPSave up to £1,048 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.

B+
0.81ct Heart
£1,095 GBP