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Cushion|Natural|GIA

1.21ct H SI1 Cushion Natural Diamond

VG • H/SI1 • GIA 2436895435

Certificate GIA 2436895435

Diamond specifications and retailer prices

From £3,117 GBP
As of November 4, 2026
Save £2,560 GBP (45%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £5,677 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 H colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 2436895435. Listed at 8 retailers as of November 4, 2026, with prices from £3,117 to £5,677, a £2,560 spread on the same certified stone. MOH London lists it at £5,677. 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
H
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 2436895435
Dimensions6.91 × 5.28 × 3.77 mm
L/W Ratio1.31
Top View
6.91 mm5.28 mm1.21 ctH / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 2436895435
Side View
Table 63.0%CrownGirdle: ThickPavilionCulet: NoneDepth 71.3%

Caratlytics Score

How it works →
B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: £5,677 GBP|Low: £3,041 GBP|High: £5,760 GBP|Avg: £3,982 GBP|+1.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 8£3,117 GBP
Retailer 5£3,175 GBP
Retailer 7£3,573 GBP
Retailer 6£3,603 GBP
Retailer 2£4,022 GBP
Retailer 3£4,303 GBP
Retailer 4£4,360 GBP
MOH London£5,677 GBP

42 data points across 8 retailers

8 retailers£3,117 GBP to £5,677 GBP

B
Cheapest Retailer
-
£3,117 GBP
B
Retailer 2
-
£3,175 GBP
View
Retailer 3
-
£3,573 GBP
View
Price last confirmed 9 days ago
Retailer 4
-
£3,603 GBP
View
Price last confirmed 29 days ago
B
Retailer 5
-
£4,022 GBP
View
B
Retailer 6
-
£4,303 GBP
View
B
Retailer 7
-
£4,360 GBP
View
Most Expensive
B
MOH London
95F446285 · Nov 4
£5,677 GBP
View
7 more retailers have this diamond
Prices start from £3,117 GBPSave up to £2,560 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
£3,117 GBP