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Heart|Natural|GIA

1.23ct J SI2 Heart Natural Diamond

VG • J/SI2 • GIA 6252782597

Certificate GIA 6252782597

Diamond specifications and retailer prices

From €3,388 EUR
As of November 5, 2026
Save €2,018 EUR (37%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: €5,406 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 J colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6252782597. Listed at 3 retailers as of November 4, 2026, with prices from €3,388 to €5,406, a €2,018 spread on the same certified stone. MOH London lists it at €5,406. 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
J
Colour
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6252782597
Dimensions5.99 × 5.83 × 4.07 mm
L/W Ratio1.03
Girdle conditionFaceted
Culet sizeNone
Cert comments
Additional twinning wisps are not shown. Surface graining is not shown.
Top View
5.99 mm5.83 mm1.23 ctJ / SI2
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 6252782597
Side View
Table 64.0%CrownGirdle: VTK-ETKPavilionCulet: NoneDepth 69.8%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 5
Current: €5,406 EUR|Low: €3,318 EUR|High: €5,486 EUR|Avg: €4,200 EUR|-0.3%
MOH London
Retailer 2
Retailer 3
November 6, 2026
Retailer 3€3,388 EUR
Retailer 2€3,773 EUR
MOH London€5,406 EUR

44 data points across 3 retailers

3 retailers€3,388 EUR to €5,406 EUR

B
Cheapest Retailer
-
€3,388 EUR
B
Retailer 2
-
€3,773 EUR
View
Most Expensive
C
MOH London
26AEA4337 · Nov 4
€5,406 EUR
£4,753 GBP
View
2 more retailers have this diamond
Prices start from €3,388 EURSave up to €2,018 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
€3,388 EUR