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Cushion|Natural|GIA

1.21ct E SI1 Cushion Natural Diamond

EX • E/SI1 • GIA 3385845732

Certificate GIA 3385845732

Diamond specifications and retailer prices

From £3,399 GBP
As of November 6, 2026
Save £1,421 GBP (29%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £4,819 GBP at 77 Diamonds · As of November 6, 2026
View at 77 Diamonds

About this 1.21ct natural cushion diamond

This 1.21ct natural cushion sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 3385845732. Listed at 4 retailers as of November 6, 2026, with prices from £3,399 to £4,819, a £1,421 spread on the same certified stone. 77 Diamonds lists it at £4,819. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.21
Carat
E
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 3385845732
Dimensions6.41 × 5.76 × 3.97 mm
L/W Ratio1.11
Top View
6.41 mm5.76 mm1.21 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 3385845732
Side View
Table 58.0%CrownGirdle: VTN-THKPavilionCulet: NoneDepth 69.0%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 6
Current: £4,819 GBP|Low: £3,355 GBP|High: £4,884 GBP|Avg: £3,852 GBP|+0.1%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
November 6, 2026
Retailer 2£3,399 GBP
Retailer 3£3,539 GBP
Retailer 4£3,624 GBP
77 Diamonds£4,819 GBP

32 data points across 4 retailers

4 retailers£3,399 GBP to £4,819 GBP

B
Cheapest Retailer
-
£3,399 GBP
B
Retailer 2
-
£3,539 GBP
View
B
Retailer 3
-
£3,624 GBP
View
Most Expensive
B
77 Diamonds
CUSMBJWVEWTTR · Nov 6
£4,819 GBP
View
3 more retailers have this diamond
Prices start from £3,399 GBPSave up to £1,421 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
£3,399 GBP