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Cushion|Natural|GIA

1.00ct G SI2 Cushion Natural Diamond

VG • G/SI2 • GIA 1528811405

Certificate GIA 1528811405

Diamond specifications and retailer prices

From £820 GBP
As of November 6, 2026
Save £1,111 GBP (58%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £1,932 GBP at MOH London · As of November 2, 2026
View at MOH London

About this 1ct natural cushion diamond

This 1ct natural cushion sits in the classic one-carat band, graded G colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 1528811405. Listed at 12 retailers as of November 2, 2026, with prices from £820 to £1,932, a £1,111 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
G
Colour
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1528811405
Dimensions6.80 × 5.22 × 3.52 mm
L/W Ratio1.30
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Cloud, Crystal, Feather, Needle, Indented Natural
Top View
6.80 mm5.22 mm1.00 ctG / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1528811405
Side View
Table 65.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 67.5%

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 6
Current: £1,932 GBP|Low: £820 GBP|High: £2,007 GBP|Avg: £1,188 GBP|-3.7%
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 2£820 GBP
Retailer 10£865 GBP
Retailer 11£967 GBP
Retailer 9£1,021 GBP
Retailer 4£1,084 GBP
Retailer 8£1,162 GBP
Retailer 3£1,204 GBP
Retailer 6£1,217 GBP
Retailer 7£1,220 GBP
Retailer 5£1,527 GBP
MOH London£1,932 GBP

22 data points across 11 retailers

12 retailers£820 GBP to £1,932 GBP

A
Cheapest Retailer
-
£820 GBP
A
Retailer 2
-
£865 GBP
View
Final sale: no returns
A
Retailer 3
-
£967 GBP
View
A
Retailer 4
-
£1,021 GBP
View
A
Retailer 5
-
£1,084 GBP
View
A
Retailer 6
-
£1,162 GBP
View
A
Retailer 7
-
£1,204 GBP
View
A
Retailer 8
-
£1,213 GBP
View
A
Retailer 9
-
£1,217 GBP
View
A
Retailer 10
-
£1,220 GBP
View
B+
Retailer 11
-
£1,527 GBP
View
Most Expensive
B+
MOH London
063664E99 · Nov 2
£1,932 GBP
View
11 more retailers have this diamond
Prices start from £820 GBPSave up to £1,111 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
£820 GBP