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Cushion|Natural|GIA

1.20ct J SI2 Cushion Natural Diamond

ID • J/SI2 • GIA 6555811643

Certificate GIA 6555811643

Diamond specifications and retailer prices

From £1,138 GBP
As of November 6, 2026
Save £1,512 GBP (57%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £2,650 GBP at MOH London · As of November 4, 2026
View at MOH London

About this 1.2ct natural cushion diamond

This 1.2ct natural cushion sits in the classic one-carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6555811643. Listed at 12 retailers as of November 4, 2026, with prices from £1,138 to £2,650, a £1,512 spread on the same certified stone. MOH London lists it at £2,650. 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

1.20
Carat
J
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6555811643
Dimensions7.46 × 5.51 × 3.58 mm
L/W Ratio1.35
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Needle, Indented Natural, Natural
Top View
7.46 mm5.51 mm1.20 ctJ / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6555811643
Side View
Table 60.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 65.0%

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: £2,650 GBP|Low: £1,128 GBP|High: £2,704 GBP|Avg: £1,626 GBP|-2.0%
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 9£1,138 GBP
Retailer 2£1,189 GBP
Retailer 11£1,399 GBP
Retailer 6£1,413 GBP
Retailer 3£1,525 GBP
Retailer 5£1,579 GBP
Retailer 8£1,584 GBP
Retailer 10£1,620 GBP
Retailer 7£1,647 GBP
Retailer 4£2,060 GBP
MOH London£2,650 GBP

32 data points across 11 retailers

12 retailers£1,138 GBP to £2,650 GBP

A
Cheapest Retailer
-
£1,138 GBP
A
Retailer 2
-
£1,189 GBP
View
B+
Retailer 3
-
£1,399 GBP
View
Final sale: no returns
B+
Retailer 4
-
£1,413 GBP
View
B+
Retailer 5
-
£1,435 GBP
View
Retailer 6
-
£1,525 GBP
View
Price last confirmed 9 days ago
B+
Retailer 7
-
£1,579 GBP
View
B+
Retailer 8
-
£1,584 GBP
View
B+
Retailer 9
-
£1,620 GBP
View
B+
Retailer 10
-
£1,647 GBP
View
B
Retailer 11
-
£2,060 GBP
View
Most Expensive
B
MOH London
7C0BBE768 · Nov 4
£2,650 GBP
View
11 more retailers have this diamond
Prices start from £1,138 GBPSave up to £1,512 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
1.20ct Cushion
£1,138 GBP