CaratHunter
Plans
Cushion|Natural|GIA

1.22ct I SI1 Cushion Natural Diamond

VG • I/SI1 • GIA 2557555836

Certificate GIA 2557555836

Diamond specifications and retailer prices

From £1,154 GBP
As of November 5, 2026
Save £213 GBP (16%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £1,367 GBP at Blue Nile · As of November 5, 2026
View at Blue Nile

About this 1.22ct natural cushion diamond

This 1.22ct natural cushion sits in the classic one-carat band, graded I 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 2557555836. Listed at 3 retailers as of November 5, 2026, with prices from £1,154 to £1,367, a £213 spread on the same certified stone. Blue Nile lists it at £1,367. 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

1.22
Carat
I
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.6°
Pavilion angle57.2°
OriginNatural
Grading LabGIA
CertificateGIA 2557555836
Dimensions6.12 × 6.02 × 4.05 mm
L/W Ratio1.02
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Cloud, Feather, Indented Natural, Needle
Top View
6.12 mm6.02 mm1.22 ctI / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2557555836
Side View
Table 62.0%Crown 36.6°Girdle: MED-VTKPavilion 57.2°Culet: NoneDepth 67.2%

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: £1,367 GBP|Low: £1,154 GBP|High: £1,411 GBP|Avg: £1,267 GBP|-3.1%
Blue Nile
Retailer 2
Retailer 3
November 5, 2026
Retailer 2£1,154 GBP
Retailer 3£1,235 GBP
Blue Nile£1,367 GBP

39 data points across 3 retailers

3 retailers£1,154 GBP to £1,367 GBP

A
Cheapest Retailer
-
£1,154 GBP
A
Retailer 2
-
£1,235 GBP
View
Most Expensive
B+
Blue Nile
29486639 · Nov 5
£1,367 GBP
$1,830 USD
View
2 more retailers have this diamond
Prices start from £1,154 GBPSave up to £213 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
1.22ct Cushion
£1,154 GBP