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Princess|Natural|IGI

1.21ct J SI1 Princess Natural Diamond

VG • J/SI1 • IGI 341880279

Shape and cutting style on the report: Princess cut

Certificate IGI 341880279

Diamond specifications and retailer prices

From £837 GBP
As of November 1, 2026
Save £1,034 GBP (55%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £1,871 GBP at MOH London · As of November 4, 2026
View at MOH London

About this 1.21ct natural princess diamond

This 1.21ct natural princess sits in the classic one-carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 341880279. Listed at 4 retailers as of November 1, 2026, with prices from £837 to £1,871, a £1,034 spread on the same certified stone. MOH London lists it at £1,871. 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
J
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishGood
SymmetryGood
FluorescenceNone
Crown angle40°
Pavilion angle40.7°
OriginNatural
Grading LabIGI
CertificateIGI 341880279
Dimensions5.73 × 5.64 × 4.31 mm
L/W Ratio1.02
Culet sizePointed
Top View
5.73 mm5.64 mm1.21 ctJ / SI1
OriginNatural
CutVery Good
PolishGood
SymmetryGood
FluorescenceNone
CertificateIGI 341880279
Side View
Table 72.0%Crown 40°Girdle: ThickPavilion 40.7°Culet: NoneDepth 76.4%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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Price History

Last verified: Nov 1
Current: £1,871 GBP|Low: £837 GBP|High: £2,266 GBP|Avg: £1,453 GBP|-16.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
November 6, 2026
Retailer 4£837 GBP
Retailer 3£1,150 GBP
Retailer 2£1,420 GBP
MOH London£1,871 GBP

39 data points across 4 retailers

4 retailers£837 GBP to £1,871 GBP

B+
Cheapest Retailer
-
£837 GBP
B+
Retailer 2
-
£1,150 GBP
View
B
Retailer 3
-
£1,420 GBP
View
Most Expensive
B
MOH London
5583D1BEF · Nov 4
£1,871 GBP
View
3 more retailers have this diamond
Prices start from £837 GBPSave up to £1,034 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 Princess
£837 GBP