CaratHunter
Plans
Heart|Natural|GIA

0.81ct F SI1 Heart Natural Diamond

EX • F/SI1 • GIA 6531953926

Certificate GIA 6531953926

Diamond specifications and retailer prices

From £536 GBP
₹68,540 INR
As of November 2, 2026
Save £1,713 GBP (76%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £2,250 GBP at NZ Jewellers · As of October 30, 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 F 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 6531953926. Listed at 21 retailers as of October 30, 2026, with prices from £536 to £2,250, a £1,713 spread on the same certified stone. NZ Jewellers lists it at £2,250. 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
F
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6531953926
Dimensions5.47 × 6.43 × 3.81 mm
L/W Ratio1.18
Top View
5.47 mm6.43 mm0.81 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6531953926
Side View
Table 58.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 59.3%

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 2
Current: £536 GBP|Low: £535 GBP|High: £1,328 GBP|Avg: £796 GBP|-3.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 1£536 GBP
Retailer 8£544 GBP
Retailer 11£649 GBP
Retailer 4£673 GBP
Retailer 10£709 GBP
Retailer 12£721 GBP
Retailer 3£745 GBP
Retailer 9£838 GBP
Retailer 6£848 GBP
Retailer 2£876 GBP
Retailer 5£904 GBP
Retailer 7£1,314 GBP

23 data points across 12 retailers

21 retailers£536 GBP to £2,250 GBP

A
Cheapest Retailer
-
£536 GBP
₹68,540 INR
A
Retailer 2
-
£544 GBP
HK$5,700 HKD
View
Retailer 3
-
£649 GBP
€829 EUR
View
Price last confirmed 7 days ago
A
Retailer 4
-
£662 GBP
$888 USD
View
Final sale: no returns
A
Retailer 5
-
£670 GBP
$899 USD
View
A
Retailer 6
-
£673 GBP
SGD 1,221 SGD
View
A
Retailer 7
-
£709 GBP
$951 USD
View
A
Retailer 8
-
£718 GBP
$963 USD
View
A
Retailer 9
-
£721 GBP
$968 USD
View
A
Retailer 10
-
£745 GBP
$1,000 USD
View
Retailer 11
-
£750 GBP
SGD 1,360 SGD
View
Price last confirmed 7 days ago
A
Retailer 12
-
£828 GBP
$1,111 USD
View
A
Retailer 13
-
£838 GBP
View
A
Retailer 14
-
£848 GBP
View
A
Retailer 15
-
£876 GBP
$1,175 USD
View
A
Retailer 16
-
£904 GBP
View
B+
Retailer 17
-
£945 GBP
$1,268 USD
View
B+
Retailer 18
-
£1,023 GBP
$1,372 USD
View
B+
Retailer 19
-
£1,171 GBP
CA$2,183 CAD
View
B+
Retailer 20
-
£1,314 GBP
View
Most Expensive
B
NZ Jewellers
9a3a4a66-9d39-45f1-a23e-0ebe130b1b12 · Oct 30
£2,250 GBP
$3,019 USD
View
20 more retailers have this diamond
Prices start from £536 GBPSave up to £1,713 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
£536 GBP