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Cushion|Natural|GIA

1.20ct I SI1 Cushion Natural Diamond

EX • I/SI1 • GIA 5231875067

Certificate GIA 5231875067

Diamond specifications and retailer prices

From £2,002 GBP
As of November 6, 2026
Save £1,991 GBP (50%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £3,994 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 I 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 5231875067. Listed at 16 retailers as of November 4, 2026, with prices from £2,002 to £3,994, a £1,991 spread on the same certified stone. MOH London lists it at £3,994. 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
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5231875067
Dimensions7.30 × 5.63 × 3.53 mm
L/W Ratio1.30
Top View
7.30 mm5.63 mm1.20 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 5231875067
Side View
Table 65.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 62.7%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £3,994 GBP|Low: £2,002 GBP|High: £4,111 GBP|Avg: £2,598 GBP|-2.9%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
November 6, 2026
Retailer 3£2,002 GBP
Retailer 5£2,107 GBP
Retailer 4£2,188 GBP
Retailer 14£2,191 GBP
Retailer 2£2,322 GBP
Retailer 10£2,354 GBP
Retailer 8£2,462 GBP
Retailer 11£2,480 GBP
Retailer 13£2,480 GBP
Retailer 12£2,563 GBP
Retailer 7£2,787 GBP
Retailer 6£2,802 GBP
Retailer 9£2,922 GBP
MOH London£3,994 GBP

30 data points across 14 retailers

16 retailers£2,002 GBP to £3,994 GBP

B+
Cheapest Retailer
-
£2,002 GBP
Final sale: no returns
B+
Retailer 2
-
£2,107 GBP
View
Retailer 3
-
£2,188 GBP
View
Price last confirmed 9 days ago
B+
Retailer 4
-
£2,191 GBP
View
B
Retailer 5
-
£2,276 GBP
View
B+
Retailer 6
-
£2,322 GBP
View
B
Retailer 7
-
£2,354 GBP
View
B+
Retailer 8
-
£2,462 GBP
View
B+
Retailer 9
-
£2,480 GBP
View
B+
Retailer 10
-
£2,480 GBP
View
B
Retailer 11
-
£2,563 GBP
View
Retailer 12
-
£2,601 GBP
View
Price last confirmed 31 days ago
B
Retailer 13
-
£2,787 GBP
View
Retailer 14
-
£2,802 GBP
View
Price last confirmed 15 days ago
B
Retailer 15
-
£2,922 GBP
View
Most Expensive
B
MOH London
534729B15 · Nov 4
£3,994 GBP
View
15 more retailers have this diamond
Prices start from £2,002 GBPSave up to £1,991 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.

B+
1.20ct Cushion
£2,002 GBP