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Cushion|Natural|GIA

1.21ct H SI1 Cushion Natural Diamond

ID • H/SI1 • GIA 5563717049

Certificate GIA 5563717049

Diamond specifications and retailer prices

From £1,578 GBP
As of November 5, 2026
Save £1,468 GBP (48%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £3,046 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 top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5563717049. Listed at 6 retailers as of November 4, 2026, with prices from £1,578 to £3,046, a £1,468 spread on the same certified stone. MOH London lists it at £3,046. 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
H
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.57°
OriginNatural
Grading LabGIA
CertificateGIA 5563717049
Dimensions6.34 × 5.95 × 4.08 mm
L/W Ratio1.07
Culet sizeNone
Key to symbols
Crystal, Cloud, Needle, Indented Natural
Top View
6.34 mm5.95 mm1.21 ctH / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5563717049
Side View
Table 63.0%Crown 34.57°GirdlePavilionCulet: NDepth 68.6%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: £3,046 GBP|Low: £1,578 GBP|High: £3,070 GBP|Avg: £2,041 GBP|-0.8%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 7, 2026
Retailer 5£1,578 GBP
Retailer 4£1,697 GBP
Retailer 2£1,894 GBP
Retailer 6£1,898 GBP
Retailer 3£2,163 GBP
MOH London£3,046 GBP

11 data points across 6 retailers

6 retailers£1,578 GBP to £3,046 GBP

A
Cheapest Retailer
-
£1,578 GBP
B+
Retailer 2
-
£1,697 GBP
View
B+
Retailer 3
-
£1,894 GBP
View
B+
Retailer 4
-
£1,898 GBP
View
B+
Retailer 5
-
£2,163 GBP
View
Most Expensive
B
MOH London
336CAD0D4 · Nov 4
£3,046 GBP
View
5 more retailers have this diamond
Prices start from £1,578 GBPSave up to £1,468 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.

A
1.21ct Cushion
£1,578 GBP