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Heart|Natural|GIA

1.23ct F SI1 Heart Natural Diamond

GD • F/SI1 • GIA 2278523940

Certificate GIA 2278523940

Diamond specifications and retailer prices

From $2,361 USD
As of November 6, 2026
Save $2,648 USD (53%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $5,009 USD at MOH London · As of November 4, 2026
View at MOH London

About this 1.23ct natural heart diamond

This 1.23ct natural heart sits in the classic one-carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 2278523940. Listed at 21 retailers as of November 4, 2026, with prices from $2,361 to $5,009, a $2,648 spread on the same certified stone. MOH London lists it at $5,009. 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

1.23
Carat
F
Color
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2278523940
Dimensions6.44 × 6.04 × 4.10 mm
L/W Ratio1.07
Top View
6.44 mm6.04 mm1.23 ctF / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2278523940
Side View
Table 62.0%CrownGirdle: STK-ETKPavilionCulet: NoneDepth 67.8%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $5,009 USD|Low: $1,968 USD|High: $5,712 USD|Avg: $3,157 USD|-12.2%
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
Retailer 17
Retailer 18
Retailer 19
Retailer 20
November 6, 2026
Retailer 17$2,361 USD
Retailer 7$2,437 USD
Retailer 3$2,446 USD
Retailer 19$2,510 USD
Retailer 20$2,568 USD
Retailer 12$2,667 USD
Retailer 18$2,675 USD
Retailer 6$2,721 USD
Retailer 10$2,756 USD
Retailer 11$2,777 USD
Retailer 16$2,952 USD
Retailer 5$3,027 USD
Retailer 14$3,179 USD
Retailer 8$3,208 USD
Retailer 13$3,293 USD
Retailer 4$3,394 USD
Retailer 15$3,665 USD
Retailer 2$3,717 USD
Retailer 9$4,329 USD
MOH London$5,009 USD

40 data points across 20 retailers

21 retailers$2,361 USD to $5,009 USD

B+
Cheapest Retailer
-
$2,361 USD
B+
Retailer 2
-
$2,437 USD
View
B+
Retailer 3
-
$2,446 USD
View
B+
Retailer 4
-
$2,510 USD
View
Final sale: no returns
B+
Retailer 5
-
$2,568 USD
View
B+
Retailer 6
-
$2,667 USD
View
B+
Retailer 7
-
$2,675 USD
View
Retailer 8
-
$2,721 USD
View
Price last confirmed 22 days ago
B+
Retailer 9
-
$2,756 USD
View
Retailer 10
-
$2,777 USD
View
Price last confirmed 23 days ago
B
Retailer 11
-
$2,952 USD
View
B
Retailer 12
-
$3,027 USD
View
B
Retailer 13
-
$3,179 USD
View
B
Retailer 14
-
$3,203 USD
View
Retailer 15
-
$3,208 USD
View
Price last confirmed 31 days ago
B+
Retailer 16
-
$3,293 USD
View
B
Retailer 17
-
$3,394 USD
View
B
Retailer 18
-
$3,665 USD
View
B
Retailer 19
-
$3,717 USD
View
B
Retailer 20
-
$4,329 USD
View
Most Expensive
B
MOH London
45AC09C87 · Nov 4
$5,009 USD
£3,944 GBP
View
20 more retailers have this diamond
Prices start from $2,361 USDSave up to $2,648 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+
1.23ct Heart
$2,361 USD