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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 £1,522 GBP
As of November 5, 2026
Save £614 GBP (29%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: £2,136 GBP 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 £1,522 to £2,136, a £614 spread on the same certified stone. Yorxs lists it at £2,136. 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: £1,522 GBP|Low: £1,522 GBP|High: £2,163 GBP|Avg: £1,829 GBP
Retailer 1
Yorxs
November 5, 2026
Retailer 1£1,522 GBP
Yorxs£2,136 GBP

20 data points across 2 retailers

2 retailers£1,522 GBP to £2,136 GBP

B
Cheapest Retailer
-
£1,522 GBP
Most Expensive
C
Yorxs
430643675 · Nov 5
£2,136 GBP
€2,738 EUR
View
1 more retailer has this diamond
Prices start from £1,522 GBPSave up to £614 GBP

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
£1,522 GBP