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Cushion|Natural|GIA

1.21ct L SI1 Cushion Natural Diamond

GD • L/SI1 • GIA 6405677842

Certificate GIA 6405677842

Diamond specifications and retailer prices

From £602 GBP
As of November 6, 2026
Save £469 GBP (44%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £1,072 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 L colour (faint-tinted) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 6405677842. Listed at 12 retailers as of November 6, 2026, with prices from £602 to £1,072, a £469 spread on the same certified stone. Yorxs lists it at £1,072. 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
L
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
Crown angle39°
Pavilion angle36°
OriginNatural
Grading LabGIA
CertificateGIA 6405677842
Dimensions6.15 × 5.84 × 4.05 mm
L/W Ratio1.05
Top View
6.15 mm5.84 mm1.21 ctL / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6405677842
Side View
Table 63.0%Crown 39°Girdle: MED-VTKPavilion 36°Culet: NoneDepth 69.4%

Caratlytics Score

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

Price History

Last verified: Nov 6
Current: £744 GBP|Low: £554 GBP|High: £1,072 GBP|Avg: £744 GBP|+4.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Yorxs
November 6, 2026
Retailer 10£602 GBP
Retailer 8£642 GBP
Retailer 9£643 GBP
Retailer 2£646 GBP
Retailer 11£677 GBP
Retailer 7£703 GBP
Retailer 1£744 GBP
Retailer 6£811 GBP
Retailer 4£891 GBP
Retailer 3£897 GBP
Retailer 5£937 GBP
Yorxs£1,072 GBP

31 data points across 12 retailers

12 retailers£602 GBP to £1,072 GBP

B+
Cheapest Retailer
-
£602 GBP
B+
Retailer 2
-
£642 GBP
View
Final sale: no returns
B+
Retailer 3
-
£643 GBP
View
Retailer 4
-
£646 GBP
View
Price last confirmed 9 days ago
B+
Retailer 5
-
£677 GBP
View
B+
Retailer 6
-
£703 GBP
View
B+
Retailer 7
-
£744 GBP
View
B+
Retailer 8
-
£811 GBP
View
B+
Retailer 9
-
£891 GBP
View
B+
Retailer 10
-
£897 GBP
View
B+
Retailer 11
-
£937 GBP
View
Most Expensive
B
Yorxs
2BF2B0E0E · Nov 6
£1,072 GBP
€1,366 EUR
View
11 more retailers have this diamond
Prices start from £602 GBPSave up to £469 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
£602 GBP