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Heart|Natural|GIA

0.91ct F SI2 Heart Natural Diamond

GD • F/SI2 • GIA 6455988523

Certificate GIA 6455988523

Diamond specifications and retailer prices

From £1,168 GBP
$1,567 USD
As of October 29, 2026
Save £1,782 GBP (60%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £2,949 GBP at Moon Ocean · As of November 2, 2026
View at Moon Ocean

About this 0.91ct natural heart diamond

This 0.91ct natural heart sits in the just-under-one-carat band, graded F colour (colourless) and SI2 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 6455988523. Listed at 12 retailers as of November 1, 2026, with prices from £1,168 to £2,949, a £1,782 spread on the same certified stone. Moon Ocean lists it at £2,949. 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

0.91
Carat
F
Colour
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6455988523
Dimensions6.75 × 6.23 × 3.58 mm
L/W Ratio1.08
Top View
6.75 mm6.23 mm0.91 ctF / SI2
OriginNatural
CutGood
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 6455988523
Side View
Table 56.0%CrownGirdle: THN-STKPavilionCulet: NoneDepth 57.4%

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: Oct 29
Current: £2,949 GBP|Low: £1,024 GBP|High: £2,990 GBP|Avg: £1,680 GBP|-1.2%
Moon Ocean
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 2, 2026
Retailer 5£1,024 GBP
Retailer 3£1,276 GBP
Retailer 6£1,394 GBP
Retailer 2£1,594 GBP
Retailer 4£1,997 GBP
Moon Ocean£2,949 GBP

43 data points across 6 retailers

12 retailers£1,168 GBP to £2,949 GBP

B+
Cheapest Retailer
-
£1,168 GBP
$1,567 USD
B+
Retailer 2
-
£1,168 GBP
$1,567 USD
View
B
Retailer 3
-
£1,221 GBP
$1,639 USD
View
B
Retailer 4
-
£1,269 GBP
$1,703 USD
View
B
Retailer 5
-
£1,276 GBP
View
B
Retailer 6
-
£1,347 GBP
$1,808 USD
View
Retailer 7
-
£1,394 GBP
View
Price last confirmed 37 days ago
Retailer 8
-
£1,408 GBP
View
Price last confirmed 37 days ago
B
Retailer 9
-
£1,594 GBP
€2,037 EUR
View
B
Retailer 10
-
£1,997 GBP
View
C
Retailer 11
-
£2,847 GBP
$3,821 USD
View
Most Expensive
C
Moon Ocean
NVN-A929EEB78-523 · Nov 2
£2,949 GBP
View
11 more retailers have this diamond
Prices start from £1,168 GBPSave up to £1,782 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+
0.91ct Heart
£1,168 GBP