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1.21ct M SI2 Round Natural Diamond

VG • M/SI2 • HRD 190000166353

Certificate HRD 190000166353

Diamond specifications and retailer prices

From $2,927 AUD
As of November 5, 2026
Save $1,180 AUD (29%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $4,107 AUD at Yorxs · As of November 5, 2026
View at Yorxs

About this 1.21ct natural round diamond

This 1.21ct natural round sits in the classic one-carat band, graded M colour (faint-tinted) and SI2 clarity (slightly-included), with a very-good cut grade and certified by HRD 190000166353. Listed at 2 retailers as of November 5, 2026, with prices from $2,927 to $4,107, a $1,180 spread on the same certified stone. Yorxs lists it at $4,107. 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

1.21
Carat
M
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceStrong
Crown angle34.9°
Pavilion angle41.2°
OriginNatural
Grading LabHRD
CertificateHRD 190000166353
Dimensions6.79 × 6.84 × 4.21 mm
L/W Ratio1.01
Girdle conditionFaceted
Top View
6.79 mm6.84 mm1.21 ctM / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceStrong
CertificateHRD 190000166353
Side View
Table 58.0%Crown 34.9°Girdle: MediumPavilion 41.2°Culet: NoneDepth 61.8%

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: $2,927 AUD|Low: $2,927 AUD|High: $4,158 AUD|Avg: $3,516 AUD
Retailer 1
Yorxs
November 5, 2026
Retailer 1$2,927 AUD
Yorxs$4,107 AUD

20 data points across 2 retailers

2 retailers$2,927 AUD to $4,107 AUD

B
Cheapest Retailer
-
$2,927 AUD
Most Expensive
C
Yorxs
430643675 · Nov 5
$4,107 AUD
€2,738 EUR
View
1 more retailer has this diamond
Prices start from $2,927 AUDSave up to $1,180 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
1.21ct Round
$2,927 AUD