Heart|Natural|GIA

0.91ct F SI1 Heart Natural Diamond

VG • F/SI1 • GIA 2225433751

Certificate GIA 2225433751

Diamond specifications and retailer prices

From $4,173 USD
As of October 30, 2026
Save $1,410 USD (25%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $8,552 USD at MOH London · As of October 29, 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 October 30, 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
Color
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

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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: Oct 30
Current: $8,552 USD|Low: $3,722 USD|High: $8,932 USD|Avg: $5,780 USD|+0.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 30, 2026
Retailer 3$4,173 USD
Retailer 4$4,466 USD
Retailer 5$4,838 USD
Retailer 7$4,838 USD
Retailer 9$4,838 USD
Retailer 2$5,261 USD
Retailer 8$5,583 USD
Retailer 10$5,887 USD
MOH London$8,552 USD
Retailer 6$8,932 USD

39 data points across 10 retailers

9 retailers$4,173 USD to $5,583 USD

B
Cheapest Retailer
-
$4,173 USD
B
Retailer 2
-
$4,466 USD
View
Final sale: no returns
B
Retailer 3
-
$4,838 USD
View
B
Retailer 4
-
$4,838 USD
View
B
Retailer 5
-
$5,261 USD
£4,143 GBP
View
B
Retailer 6
-
$5,583 USD
View
Retailer 7
-
$7,808 USD
View
Price under review
Most Expensive
MOH London
98C9D2D50 · Oct 29
$8,552 USD
£6,734 GBP
View
Price under review
7 more retailers have this diamond
Prices start from $4,173 USDSave up to $1,410 USD

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
$4,173 USD