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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 $5,506 AUD
As of November 5, 2026
Save $3,279 AUD (37%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $8,785 AUD 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 $5,506 to $8,785, a $3,279 spread on the same certified stone. MOH London lists it at $8,785. 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: $8,785 AUD|Low: $5,391 AUD|High: $8,915 AUD|Avg: $6,825 AUD|-0.3%
MOH London
Retailer 2
Retailer 3
November 6, 2026
Retailer 3$5,506 AUD
Retailer 2$6,132 AUD
MOH London$8,785 AUD

44 data points across 3 retailers

3 retailers$5,506 AUD to $8,785 AUD

B
Cheapest Retailer
-
$5,506 AUD
B
Retailer 2
-
$6,132 AUD
View
Most Expensive
C
MOH London
26AEA4337 · Nov 4
$8,785 AUD
£4,753 GBP
View
2 more retailers have this diamond
Prices start from $5,506 AUDSave up to $3,279 AUD

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
$5,506 AUD