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Cushion|Natural|GIA

1.20ct F SI1 Cushion Natural Diamond

EX • F/SI1 • GIA 2231900018

Certificate GIA 2231900018

Diamond specifications and retailer prices

From £2,440 GBP
As of November 6, 2026
Save £2,735 GBP (53%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £5,175 GBP at MOH London · As of November 7, 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 F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2231900018. Listed at 21 retailers as of November 6, 2026, with prices from £2,440 to £5,175, a £2,735 spread on the same certified stone. MOH London lists it at £5,175. 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
F
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
Pavilion angle37.38°
OriginNatural
Grading LabGIA
CertificateGIA 2231900018
Dimensions7.09 × 5.47 × 3.78 mm
L/W Ratio1.30
Key to symbols
Crystal, Feather, Needle
Top View
7.09 mm5.47 mm1.20 ctF / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateGIA 2231900018
Side View
Table 67.0%CrownGirdle: THK-ETKPavilion 37.38°Culet: NoneDepth 69.2%

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: £5,175 GBP|Low: £2,362 GBP|High: £5,265 GBP|Avg: £3,444 GBP|-1.6%
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
Retailer 15
November 7, 2026
Retailer 7£2,440 GBP
Retailer 5£2,731 GBP
Retailer 12£2,959 GBP
Retailer 13£3,195 GBP
Retailer 15£3,208 GBP
Retailer 9£3,317 GBP
Retailer 3£3,407 GBP
Retailer 14£3,407 GBP
Retailer 8£3,479 GBP
Retailer 6£3,484 GBP
Retailer 4£3,519 GBP
Retailer 10£3,676 GBP
Retailer 11£3,985 GBP
Retailer 2£4,119 GBP
MOH London£5,175 GBP

46 data points across 15 retailers

21 retailers£2,440 GBP to £5,175 GBP

B+
Cheapest Retailer
-
£2,440 GBP
B+
Retailer 2
-
£2,512 GBP
View
B+
Retailer 3
-
£2,604 GBP
View
B+
Retailer 4
-
£2,684 GBP
View
B+
Retailer 5
-
£2,709 GBP
View
B+
Retailer 6
-
£2,731 GBP
View
Final sale: no returns
B+
Retailer 7
-
£2,824 GBP
View
Retailer 8
-
£2,959 GBP
View
Price last confirmed 9 days ago
B
Retailer 9
-
£3,195 GBP
View
B
Retailer 10
-
£3,208 GBP
View
B
Retailer 11
-
£3,317 GBP
View
B
Retailer 12
-
£3,407 GBP
View
B
Retailer 13
-
£3,407 GBP
View
Retailer 14
-
£3,479 GBP
View
Retailer 15
-
£3,484 GBP
View
Price last confirmed 29 days ago
B
Retailer 16
-
£3,519 GBP
View
B
Retailer 17
-
£3,676 GBP
View
Retailer 18
-
£3,694 GBP
View
Price last confirmed 15 days ago
B
Retailer 19
-
£3,985 GBP
View
Retailer 20
-
£4,119 GBP
View
Most Expensive
B
MOH London
F854FC011 · Nov 7
£5,175 GBP
View
20 more retailers have this diamond
Prices start from £2,440 GBPSave up to £2,735 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
£2,440 GBP