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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 $3,026 SGD
As of November 6, 2026
Save $3,394 SGD (53%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $6,419 SGD 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 $3,026 to $6,419, a $3,394 spread on the same certified stone. MOH London lists it at $6,419. 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
Colour
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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $6,419 SGD|Low: $2,522 SGD|High: $7,321 SGD|Avg: $4,046 SGD|-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$3,026 SGD
Retailer 7$3,123 SGD
Retailer 3$3,135 SGD
Retailer 19$3,217 SGD
Retailer 20$3,291 SGD
Retailer 12$3,418 SGD
Retailer 18$3,428 SGD
Retailer 6$3,487 SGD
Retailer 10$3,532 SGD
Retailer 11$3,559 SGD
Retailer 16$3,783 SGD
Retailer 5$3,879 SGD
Retailer 14$4,074 SGD
Retailer 8$4,111 SGD
Retailer 13$4,220 SGD
Retailer 4$4,350 SGD
Retailer 15$4,697 SGD
Retailer 2$4,764 SGD
Retailer 9$5,548 SGD
MOH London$6,419 SGD

40 data points across 20 retailers

21 retailers$3,026 SGD to $6,419 SGD

B+
Cheapest Retailer
-
$3,026 SGD
B+
Retailer 2
-
$3,123 SGD
View
B+
Retailer 3
-
$3,135 SGD
View
B+
Retailer 4
-
$3,217 SGD
View
Final sale: no returns
B+
Retailer 5
-
$3,291 SGD
View
B+
Retailer 6
-
$3,418 SGD
View
B+
Retailer 7
-
$3,428 SGD
View
Retailer 8
-
$3,487 SGD
View
Price last confirmed 22 days ago
B+
Retailer 9
-
$3,532 SGD
View
Retailer 10
-
$3,559 SGD
View
Price last confirmed 23 days ago
B
Retailer 11
-
$3,783 SGD
View
B
Retailer 12
-
$3,879 SGD
View
B
Retailer 13
-
$4,074 SGD
View
B
Retailer 14
-
$4,105 SGD
View
Retailer 15
-
$4,111 SGD
View
Price last confirmed 31 days ago
B+
Retailer 16
-
$4,220 SGD
View
B
Retailer 17
-
$4,350 SGD
View
B
Retailer 18
-
$4,697 SGD
View
B
Retailer 19
-
$4,764 SGD
View
B
Retailer 20
-
$5,548 SGD
View
Most Expensive
B
MOH London
45AC09C87 · Nov 4
$6,419 SGD
£3,944 GBP
View
20 more retailers have this diamond
Prices start from $3,026 SGDSave up to $3,394 SGD

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
$3,026 SGD