Heart|Natural|GIA

8.17ct D FL Heart Natural Diamond

VG • D/FL • GIA 5231965587

Certificate GIA 5231965587

Diamond specifications and retailer prices

From £341,140 GBP
As of November 2, 2026
Save £101,896 GBP (23%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £679,143 GBP at MOH London · As of October 15, 2026
View at MOH London

About this 8.17ct natural heart diamond

This 8.17ct natural heart sits in the over five carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 5231965587. Listed at 12 retailers as of November 2, 2026, with a 30% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

8.17
Carat
D
Colour
FL
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle43.5°
OriginNatural
Grading LabGIA
CertificateGIA 5231965587
Dimensions13.93 × 12.38 × 8.40 mm
L/W Ratio1.13
Culet sizeNone
Top View
13.93 mm12.38 mm8.17 ctD / FL
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5231965587
Side View
Table 60.0%Crown 35°Girdle: MED-THKPavilion 43.5°Culet: NDepth 60.3%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: £679,143 GBP|Low: £322,036 GBP|High: £680,042 GBP|Avg: £453,861 GBP|+4.1%
MOH London
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
Retailer 15
Retailer 16
November 3, 2026
Retailer 14£341,140 GBP
Retailer 2£385,869 GBP
Retailer 12£400,408 GBP
Retailer 8£403,586 GBP
Retailer 9£417,046 GBP
Retailer 10£427,421 GBP
Retailer 5£435,336 GBP
Retailer 15£443,036 GBP
Retailer 11£447,894 GBP
Retailer 13£448,175 GBP
Retailer 3£457,737 GBP
Retailer 4£474,913 GBP
Retailer 7£494,701 GBP
Retailer 6£514,488 GBP
Retailer 16£534,276 GBP
MOH London£679,143 GBP

40 data points across 16 retailers

12 retailers£341,140 GBP to £443,036 GBP

A
Cheapest Retailer
-
£341,140 GBP
B+
Retailer 2
-
£385,869 GBP
View
Retailer 3
-
£400,408 GBP
View
Price last confirmed 31 days ago
Retailer 4
-
£435,336 GBP
View
Price last confirmed 21 days ago
B+
Retailer 5
-
£443,036 GBP
View
Retailer 6
-
£447,894 GBP
View
Price last confirmed 20 days ago
Retailer 7
-
£448,175 GBP
View
Price last confirmed 32 days ago
Retailer 8
-
£474,913 GBP
View
Price last confirmed 19 days ago
Retailer 9
-
£494,701 GBP
View
Price last confirmed 34 days ago
Retailer 10
-
£514,488 GBP
View
Price last confirmed 27 days ago
Retailer 11
-
£534,276 GBP
View
Price last confirmed 26 days ago
Most Expensive
MOH London
BF318AFB9 · Oct 15
£679,143 GBP
View
Price last confirmed 20 days ago
11 more retailers have this diamond
Prices start from £341,140 GBPSave up to £101,896 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
8.17ct Heart
£341,140 GBP