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Cushion|Natural|GIA

1.00ct I SI1 Cushion Natural Diamond

GD • I/SI1 • GIA 6402234126

Certificate GIA 6402234126

Diamond specifications and retailer prices

From £893 GBP
As of November 4, 2026
Save £1,039 GBP (54%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £1,932 GBP at MOH London · As of November 4, 2026
View at MOH London

About this 1ct natural cushion diamond

This 1ct natural cushion sits in the classic one-carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 6402234126. Listed at 20 retailers as of November 4, 2026, with prices from £893 to £1,932, a £1,039 spread on the same certified stone. MOH London lists it at £1,932. 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

1.00
Carat
I
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6402234126
Dimensions5.65 × 5.36 × 3.70 mm
L/W Ratio1.05
Top View
5.65 mm5.36 mm1.00 ctI / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6402234126
Side View
Table 60.0%CrownGirdle: VTK-ETKPavilionCulet: NoneDepth 69.1%

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 4
Current: £1,932 GBP|Low: £893 GBP|High: £1,960 GBP|Avg: £1,214 GBP|-1.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 7£893 GBP
Retailer 3£925 GBP
Retailer 10£935 GBP
Retailer 9£965 GBP
Retailer 11£1,002 GBP
Retailer 2£1,062 GBP
Retailer 8£1,100 GBP
Retailer 6£1,221 GBP
Retailer 5£1,349 GBP
Retailer 4£1,517 GBP
MOH London£1,932 GBP

33 data points across 11 retailers

20 retailers£893 GBP to £1,932 GBP

A
Cheapest Retailer
-
£893 GBP
B+
Retailer 2
-
£925 GBP
View
Final sale: no returns
B+
Retailer 3
-
£928 GBP
View
A
Retailer 4
-
£935 GBP
View
A
Retailer 5
-
£965 GBP
View
Retailer 6
-
£1,002 GBP
View
Price last confirmed 9 days ago
A
Retailer 7
-
£1,062 GBP
View
B+
Retailer 8
-
£1,065 GBP
View
B+
Retailer 9
-
£1,083 GBP
View
B+
Retailer 10
-
£1,100 GBP
View
B+
Retailer 11
-
£1,120 GBP
View
B+
Retailer 12
-
£1,121 GBP
View
B+
Retailer 13
-
£1,195 GBP
View
B+
Retailer 14
-
£1,195 GBP
View
B+
Retailer 15
-
£1,221 GBP
View
B+
Retailer 16
-
£1,233 GBP
View
B+
Retailer 17
-
£1,349 GBP
View
Retailer 18
-
£1,446 GBP
View
Price last confirmed 34 days ago
B+
Retailer 19
-
£1,517 GBP
View
Most Expensive
B
MOH London
E71019BC0 · Nov 4
£1,932 GBP
View
19 more retailers have this diamond
Prices start from £893 GBPSave up to £1,039 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
1.00ct Cushion
£893 GBP