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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 €2,115 EUR
As of November 6, 2026
Save €2,372 EUR (53%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: €4,486 EUR 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 €2,115 to €4,486, a €2,372 spread on the same certified stone. MOH London lists it at €4,486. 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: €4,486 EUR|Low: €1,763 EUR|High: €5,116 EUR|Avg: €2,825 EUR|-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 7, 2026
Retailer 17€2,115 EUR
Retailer 7€2,183 EUR
Retailer 3€2,191 EUR
Retailer 19€2,248 EUR
Retailer 20€2,300 EUR
Retailer 12€2,389 EUR
Retailer 18€2,396 EUR
Retailer 6€2,437 EUR
Retailer 10€2,468 EUR
Retailer 11€2,487 EUR
Retailer 16€2,644 EUR
Retailer 5€2,711 EUR
Retailer 2€2,854 EUR
Retailer 8€2,873 EUR
Retailer 14€2,949 EUR
Retailer 4€3,040 EUR
Retailer 15€3,283 EUR
Retailer 13€3,329 EUR
Retailer 9€3,877 EUR
MOH London€4,486 EUR

41 data points across 20 retailers

21 retailers€2,115 EUR to €4,486 EUR

B+
Cheapest Retailer
-
€2,115 EUR
B+
Retailer 2
-
€2,183 EUR
View
B+
Retailer 3
-
€2,191 EUR
View
B+
Retailer 4
-
€2,248 EUR
View
Final sale: no returns
B+
Retailer 5
-
€2,300 EUR
View
B+
Retailer 6
-
€2,389 EUR
View
B+
Retailer 7
-
€2,396 EUR
View
Retailer 8
-
€2,437 EUR
View
Price last confirmed 22 days ago
B+
Retailer 9
-
€2,468 EUR
View
Retailer 10
-
€2,487 EUR
View
Price last confirmed 23 days ago
B
Retailer 11
-
€2,644 EUR
View
B
Retailer 12
-
€2,711 EUR
View
B
Retailer 13
-
€2,854 EUR
View
B
Retailer 14
-
€2,869 EUR
View
Retailer 15
-
€2,873 EUR
View
Price last confirmed 31 days ago
B+
Retailer 16
-
€2,949 EUR
View
B
Retailer 17
-
€3,040 EUR
View
B
Retailer 18
-
€3,283 EUR
View
B
Retailer 19
-
€3,329 EUR
View
B
Retailer 20
-
€3,877 EUR
View
Most Expensive
B
MOH London
45AC09C87 · Nov 4
€4,486 EUR
£3,944 GBP
View
20 more retailers have this diamond
Prices start from €2,115 EURSave up to €2,372 EUR

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
€2,115 EUR