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Heart|Natural|IGI

0.81ct I SI1 Heart Natural Diamond

VG • I/SI1 • IGI 457054604

Shape and cutting style on the report: Heart brilliant

Certificate IGI 457054604

Diamond specifications and retailer prices

From £864 GBP
$1,158 USD
As of October 31, 2026
Save £531 GBP (38%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £1,395 GBP at MOH London · As of November 1, 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 very-good cut grade and certified by IGI 457054604. Listed at 4 retailers as of October 31, 2026, with prices from £864 to £1,395, a £531 spread on the same certified stone. MOH London lists it at £1,395. 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

0.81
Carat
I
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle34.1°
Pavilion angle38.2°
OriginNatural
Grading LabIGI
CertificateIGI 457054604
Dimensions5.90 × 6.32 × 3.48 mm
L/W Ratio1.07
Girdle conditionFaceted
Culet sizeSmall
Top View
5.90 mm6.32 mm0.81 ctI / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI 457054604
Side View
Table 66.5%Crown 34.1°Girdle: THK-VTKPavilion 38.2°Culet: SmallDepth 55.1%

Caratlytics Score

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

Price History

Last verified: Oct 31
Current: £1,395 GBP|Low: £851 GBP|High: £1,412 GBP|Avg: £1,051 GBP|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
November 2, 2026
Retailer 4£864 GBP
Retailer 2£917 GBP
Retailer 3£1,070 GBP
MOH London£1,395 GBP

43 data points across 4 retailers

4 retailers£864 GBP to £1,395 GBP

B+
Cheapest Retailer
-
£864 GBP
$1,158 USD
B+
Retailer 2
-
£917 GBP
View
B
Retailer 3
-
£1,070 GBP
€1,365 EUR
View
Most Expensive
B
MOH London
7CCB6D255 · Nov 1
£1,395 GBP
View
3 more retailers have this diamond
Prices start from £864 GBPSave up to £531 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
£864 GBP