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Heart|Natural|GIA

0.81ct K SI1 Heart Natural Diamond

VG • K/SI1 • GIA 7501396526

Certificate GIA 7501396526

Diamond specifications and retailer prices

From £553 GBP
As of November 5, 2026
Save £441 GBP (44%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £993 GBP at MOH London · As of November 4, 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 K colour (faint-tinted) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 7501396526. Listed at 6 retailers as of November 4, 2026, with prices from £553 to £993, a £441 spread on the same certified stone. MOH London lists it at £993. 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
K
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishVery Good
SymmetryGood
FluorescenceStrong
OriginNatural
Grading LabGIA
CertificateGIA 7501396526
Dimensions5.58 × 5.18 × 3.57 mm
L/W Ratio1.08
Key to symbols
Crystal, Cavity, Feather
Top View
5.58 mm5.18 mm0.81 ctK / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryGood
FluorescenceStrong
CertificateGIA 7501396526
Side View
Table 65.0%CrownGirdle: THN-VTKPavilionCulet: NoneDepth 69.0%

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 5
Current: £993 GBP|Low: £553 GBP|High: £1,007 GBP|Avg: £721 GBP|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 6, 2026
Retailer 6£553 GBP
Retailer 3£586 GBP
Retailer 5£645 GBP
Retailer 2£760 GBP
Retailer 4£803 GBP
MOH London£993 GBP

44 data points across 6 retailers

6 retailers£553 GBP to £993 GBP

B+
Cheapest Retailer
-
£553 GBP
B+
Retailer 2
-
£586 GBP
View
B+
Retailer 3
-
£645 GBP
View
B+
Retailer 4
-
£760 GBP
View
B
Retailer 5
-
£803 GBP
View
Most Expensive
B
MOH London
E635C73D1 · Nov 4
£993 GBP
View
5 more retailers have this diamond
Prices start from £553 GBPSave up to £441 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
£553 GBP