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Cushion|Natural|IGI

1.21ct K SI1 Cushion Natural Diamond

GD • K/SI1 • IGI 234650298

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI 234650298

Diamond specifications and retailer prices

From £1,236 GBP
As of November 5, 2026
Save £670 GBP (35%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £1,905 GBP at Yorxs · As of November 6, 2026
View at Yorxs

About this 1.21ct natural cushion diamond

This 1.21ct natural cushion sits in the classic one-carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a standard cut grade and certified by IGI 234650298. Listed at 3 retailers as of November 5, 2026, with prices from £1,236 to £1,905, a £670 spread on the same certified stone. Yorxs lists it at £1,905. 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
K
Colour
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishGood
SymmetryGood
FluorescenceNone
Crown angle43.7°
Pavilion angle43.4°
OriginNatural
Grading LabIGI
CertificateIGI 234650298
Dimensions6.08 × 5.49 × 4.17 mm
L/W Ratio1.11
Girdle conditionFaceted
Culet sizePointed
Top View
6.08 mm5.49 mm1.21 ctK / SI1
OriginNatural
CutGood
PolishGood
SymmetryGood
FluorescenceNone
CertificateIGI 234650298
Side View
Table 69.0%Crown 43.7°Girdle: VTN-VTKPavilion 43.4°Culet: NoneDepth 76.0%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: £1,654 GBP|Low: £1,236 GBP|High: £1,911 GBP|Avg: £1,598 GBP|+3.5%
Retailer 1
Retailer 2
Yorxs
November 6, 2026
Retailer 2£1,236 GBP
Retailer 1£1,654 GBP
Yorxs£1,905 GBP

39 data points across 3 retailers

3 retailers£1,236 GBP to £1,905 GBP

B+
Cheapest Retailer
-
£1,236 GBP
C
Retailer 2
-
£1,654 GBP
View
Most Expensive
C
Yorxs
BN4518 · Nov 6
£1,905 GBP
€2,429 EUR
View
2 more retailers have this diamond
Prices start from £1,236 GBPSave up to £670 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 Cushion
£1,236 GBP