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Cushion|Natural|GIA

1.21ct K SI1 Cushion Natural Diamond

VG • K/SI1 • GIA 2146385865

Certificate GIA 2146385865

Diamond specifications and retailer prices

From £2,107 GBP
As of November 4, 2026
Save £2,468 GBP (54%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £4,575 GBP at MOH London · As of November 4, 2026
View at MOH London

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 very-good cut grade stated by the retailer rather than the lab and certified by GIA 2146385865. Listed at 15 retailers as of November 4, 2026, with prices from £2,107 to £4,575, a £2,468 spread on the same certified stone. MOH London lists it at £4,575. 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
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2146385865
Dimensions5.96 × 5.78 × 4.03 mm
L/W Ratio1.03
Culet sizeNone
Top View
5.96 mm5.78 mm1.21 ctK / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2146385865
Side View
Table 61.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 69.7%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: £4,575 GBP|Low: £2,137 GBP|High: £4,643 GBP|Avg: £2,860 GBP|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 8£2,137 GBP
Retailer 5£2,159 GBP
Retailer 9£2,355 GBP
Retailer 6£2,485 GBP
Retailer 7£2,666 GBP
Retailer 4£2,841 GBP
Retailer 2£3,013 GBP
Retailer 3£3,348 GBP
MOH London£4,575 GBP

42 data points across 9 retailers

15 retailers£2,107 GBP to £4,575 GBP

B
Cheapest Retailer
-
£2,107 GBP
B
Retailer 2
-
£2,137 GBP
View
B
Retailer 3
-
£2,159 GBP
View
B
Retailer 4
-
£2,197 GBP
View
B
Retailer 5
-
£2,206 GBP
View
B
Retailer 6
-
£2,355 GBP
View
B
Retailer 7
-
£2,402 GBP
View
Retailer 8
-
£2,485 GBP
View
Price last confirmed 9 days ago
B
Retailer 9
-
£2,666 GBP
View
B
Retailer 10
-
£2,701 GBP
View
B
Retailer 11
-
£2,841 GBP
View
B
Retailer 12
-
£3,013 GBP
View
Retailer 13
-
£3,106 GBP
View
Price last confirmed 15 days ago
B
Retailer 14
-
£3,348 GBP
View
Most Expensive
B
MOH London
AF4BE3DF8 · Nov 4
£4,575 GBP
View
14 more retailers have this diamond
Prices start from £2,107 GBPSave up to £2,468 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
£2,107 GBP