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Heart|Natural|HRD

1.23ct I SI2 Heart Natural Diamond

I/SI2 • HRD 190000166365

Certificate HRD 190000166365

Diamond specifications and retailer prices

From $3,797 AUD
As of November 5, 2026
Save $3,437 AUD (48%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $7,234 AUD at MOH London · As of November 7, 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 I colour (near-colourless) and SI2 clarity (slightly-included) and certified by HRD 190000166365. Listed at 2 retailers as of November 5, 2026, with prices from $3,797 to $7,234, a $3,437 spread on the same certified stone. MOH London lists it at $7,234. 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
I
Colour
SI2
Clarity
-
Cut

Specifications

Cut
PolishExcellent
SymmetryGood
FluorescenceFaint
OriginNatural
Grading LabHRD
CertificateHRD 190000166365
Dimensions6.09 × 8.14 × 3.46 mm
L/W Ratio1.34
Girdle conditionFaceted
Top View
6.09 mm8.14 mm1.23 ctI / SI2
OriginNatural
PolishExcellent
SymmetryGood
FluorescenceFaint
CertificateHRD 190000166365
Side View
Table 59.0%CrownGirdle: Extremely ThickPavilionCulet: NoneDepth 42.5%

Caratlytics Score

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B
Good
Decent quality, room for better deals
Unlock full score analysis
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Price History

Last verified: Nov 5
Current: $7,234 AUD|Low: $3,797 AUD|High: $7,362 AUD|Avg: $4,998 AUD|-1.6%
MOH London
Retailer 2
Retailer 3
Retailer 4
November 7, 2026
Retailer 4$3,797 AUD
Retailer 3$4,135 AUD
Retailer 2$4,759 AUD
MOH London$7,234 AUD

8 data points across 4 retailers

2 retailers$3,797 AUD to $7,234 AUD

B
Cheapest Retailer
-
$3,797 AUD
Most Expensive
C
MOH London
2C36909E4 · Nov 7
$7,234 AUD
£3,914 GBP
View
1 more retailer has this diamond
Prices start from $3,797 AUDSave up to $3,437 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
$3,797 AUD