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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 $2,609 USD
As of November 5, 2026
Save $2,376 USD (48%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $4,985 USD 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 I colour (near-colourless) and SI2 clarity (slightly-included) and certified by HRD 190000166365. Listed at 2 retailers as of November 4, 2026, with prices from $2,609 to $4,985, a $2,376 spread on the same certified stone. MOH London lists it at $4,985. 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
Color
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
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Price History

Last verified: Nov 5
Current: $4,985 USD|Low: $2,609 USD|High: $5,058 USD|Avg: $3,436 USD|-1.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
November 4, 2026
Retailer 4$2,609 USD
Retailer 3$2,841 USD
Retailer 2$3,270 USD
MOH London$4,985 USD

7 data points across 4 retailers

2 retailers$2,609 USD to $4,985 USD

B
Cheapest Retailer
-
$2,609 USD
Most Expensive
C
MOH London
2C36909E4 · Nov 4
$4,985 USD
£3,925 GBP
View
1 more retailer has this diamond
Prices start from $2,609 USDSave up to $2,376 USD

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
$2,609 USD