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Marquise|Natural|HRD

1.21ct J SI1 Marquise Natural Diamond

ID • J/SI1 • HRD 260000237985

Certificate HRD 260000237985

Diamond specifications and retailer prices

From $2,765 AUD
As of November 5, 2026
Save $2,024 AUD (42%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $4,789 AUD at MOH London · As of November 2, 2026
View at MOH London

About this 1.21ct natural marquise diamond

This 1.21ct natural marquise sits in the classic one-carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by HRD 260000237985. Listed at 2 retailers as of November 2, 2026, with prices from $2,765 to $4,789, a $2,024 spread on the same certified stone. MOH London lists it at $4,789. 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
J
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle37.38°
Pavilion angle39.71°
OriginNatural
Grading LabHRD
CertificateHRD 260000237985
Dimensions10.82 × 5.55 × 3.44 mm
L/W Ratio1.95
Girdle conditionMedium
Top View
10.82 mm5.55 mm1.21 ctJ / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateHRD 260000237985
Side View
Table 59.0%Crown 37.38°GirdlePavilion 39.71°CuletDepth 61.9%

Caratlytics Score

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

Last verified: Nov 5
Current: $4,789 AUD|Low: $2,765 AUD|High: $4,981 AUD|Avg: $3,726 AUD|-3.6%
MOH London
Retailer 2
November 1, 2026
Retailer 2$2,765 AUD
MOH London$4,789 AUD

10 data points across 2 retailers

2 retailers$2,765 AUD to $4,789 AUD

A
Cheapest Retailer
-
$2,765 AUD
Most Expensive
B
MOH London
4DD5E0FDC · Nov 2
$4,789 AUD
£2,591 GBP
View
1 more retailer has this diamond
Prices start from $2,765 AUDSave up to $2,024 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 Marquise
$2,765 AUD