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Heart|Natural|GIA

0.91ct F SI1 Heart Natural Diamond

VG • F/SI1 • GIA 2225433751

Certificate GIA 2225433751

Diamond specifications and retailer prices

From $5,954 AUD
$4,173 USD
As of November 1, 2026
Save $2,012 AUD (25%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $12,138 AUD at MOH London · As of November 1, 2026
View at MOH London

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 SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 2225433751. Listed at 9 retailers as of November 1, 2026, with a 34% 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

0.91
Carat
F
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceMedium
Crown angle33.8°
Pavilion angle42°
OriginNatural
Grading LabGIA
CertificateGIA 2225433751
Dimensions5.77 × 6.83 × 3.85 mm
L/W Ratio1.18
Culet sizeNone
Key to symbols
Twinning Wisp
Top View
5.77 mm6.83 mm0.91 ctF / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 2225433751
Side View
Table 60.0%Crown 33.8°Girdle: THN-VTKPavilion 42°Culet: NoneDepth 56.4%

Caratlytics Score

How it works →
B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $12,138 AUD|Low: $5,311 AUD|High: $12,745 AUD|Avg: $8,250 AUD|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 3$5,954 AUD
Retailer 4$6,373 AUD
Retailer 5$6,903 AUD
Retailer 7$6,903 AUD
Retailer 9$6,903 AUD
Retailer 2$7,508 AUD
Retailer 8$7,966 AUD
Retailer 10$8,401 AUD
MOH London$12,138 AUD
Retailer 6$12,745 AUD

40 data points across 10 retailers

9 retailers$5,954 AUD to $7,966 AUD

B
Cheapest Retailer
-
$5,954 AUD
$4,173 USD
B
Retailer 2
-
$6,373 AUD
$4,466 USD
View
Final sale: no returns
B
Retailer 3
-
$6,903 AUD
$4,838 USD
View
B
Retailer 4
-
$6,903 AUD
$4,838 USD
View
B
Retailer 5
-
$7,508 AUD
£4,143 GBP
View
B
Retailer 6
-
$7,966 AUD
$5,583 USD
View
Retailer 7
-
$11,141 AUD
$7,808 USD
View
Price under review
Most Expensive
MOH London
98C9D2D50 · Nov 1
$12,138 AUD
£6,698 GBP
View
Price under review
7 more retailers have this diamond
Prices start from $5,954 AUDSave up to $2,012 AUD

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
$5,954 AUD