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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 $1,567 USD
As of October 29, 2026
Save $2,391 USD (60%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $3,958 USD 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 $1,567 to $3,958, a $2,391 spread on the same certified stone. Moon Ocean lists it at $3,958. 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
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: $3,958 USD|Low: $1,374 USD|High: $4,013 USD|Avg: $2,252 USD|-1.2%
Moon Ocean
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 2, 2026
Retailer 5$1,374 USD
Retailer 3$1,712 USD
Retailer 6$1,871 USD
Retailer 2$2,139 USD
Retailer 4$2,680 USD
Moon Ocean$3,958 USD

44 data points across 6 retailers

12 retailers$1,567 USD to $3,958 USD

B+
Cheapest Retailer
-
$1,567 USD
B+
Retailer 2
-
$1,567 USD
View
B
Retailer 3
-
$1,639 USD
View
B
Retailer 4
-
$1,703 USD
View
B
Retailer 5
-
$1,712 USD
£1,348 GBP
View
B
Retailer 6
-
$1,808 USD
View
Retailer 7
-
$1,871 USD
£1,473 GBP
View
Price last confirmed 36 days ago
Retailer 8
-
$1,889 USD
£1,487 GBP
View
Price last confirmed 36 days ago
B
Retailer 9
-
$2,139 USD
€2,037 EUR
View
B
Retailer 10
-
$2,680 USD
£2,110 GBP
View
C
Retailer 11
-
$3,821 USD
View
Most Expensive
C
Moon Ocean
NVN-A929EEB78-523 · Nov 2
$3,958 USD
£3,117 GBP
View
11 more retailers have this diamond
Prices start from $1,567 USDSave up to $2,391 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
$1,567 USD