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Heart|Natural|HRD

1.21ct D SI2 Heart Natural Diamond

EX • D/SI2 • HRD 260000111466

Certificate HRD 260000111466

Diamond specifications and retailer prices

From $3,333 AUD
As of November 5, 2026
Save $2,384 AUD (42%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $5,717 AUD at MOH London · As of November 2, 2026
View at MOH London

About this 1.21ct natural heart diamond

This 1.21ct natural heart sits in the classic one-carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by HRD 260000111466. Listed at 2 retailers as of November 2, 2026, with prices from $3,333 to $5,717, a $2,384 spread on the same certified stone. MOH London lists it at $5,717. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.21
Carat
D
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.75°
Pavilion angle41.47°
OriginNatural
Grading LabHRD
CertificateHRD 260000111466
Dimensions6.61 × 7.35 × 4.40 mm
L/W Ratio1.11
Girdle conditionMedium
Top View
6.61 mm7.35 mm1.21 ctD / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateHRD 260000111466
Side View
Table 62.0%Crown 40.75°GirdlePavilion 41.47°Culet: NoneDepth 59.9%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 5
Current: $5,717 AUD|Low: $3,317 AUD|High: $5,976 AUD|Avg: $4,188 AUD|-3.8%
MOH London
Retailer 2
Retailer 3
November 1, 2026
Retailer 3$3,317 AUD
Retailer 2$3,333 AUD
MOH London$5,717 AUD

12 data points across 3 retailers

2 retailers$3,333 AUD to $5,717 AUD

A
Cheapest Retailer
-
$3,333 AUD
Most Expensive
B
MOH London
E0A6C9224 · Nov 2
$5,717 AUD
£3,093 GBP
View
1 more retailer has this diamond
Prices start from $3,333 AUDSave up to $2,384 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.

A
1.21ct Heart
$3,333 AUD