Cushion|Natural|GIA

1.20ct G SI1 Cushion Natural Diamond

EX • G/SI1 • GIA 5231876887

Certificate GIA 5231876887

Diamond specifications and retailer prices

From £2,391 GBP
As of November 4, 2026
Save £1,405 GBP (37%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £5,209 GBP at MOH London · As of October 26, 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 G 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 5231876887. Listed at 19 retailers as of November 4, 2026, with a 59% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
G
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
Pavilion angle37.54°
OriginNatural
Grading LabGIA
CertificateGIA 5231876887
Dimensions7.01 × 5.65 × 3.89 mm
L/W Ratio1.24
Top View
7.01 mm5.65 mm1.20 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 5231876887
Side View
Table 65.0%CrownGirdle: STK-VTKPavilion 37.54°Culet: NoneDepth 68.8%

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 4
Current: £5,209 GBP|Low: £2,384 GBP|High: £5,265 GBP|Avg: £3,283 GBP
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 9£2,394 GBP
Retailer 2£2,576 GBP
Retailer 6£2,647 GBP
Retailer 8£2,818 GBP
Retailer 10£3,130 GBP
Retailer 5£3,153 GBP
Retailer 7£3,335 GBP
Retailer 3£3,467 GBP
Retailer 4£3,797 GBP
MOH London£5,209 GBP

45 data points across 10 retailers

19 retailers£2,391 GBP to £3,797 GBP

B+
Cheapest Retailer
-
£2,391 GBP
B+
Retailer 2
-
£2,394 GBP
View
B+
Retailer 3
-
£2,451 GBP
View
B+
Retailer 4
-
£2,501 GBP
View
B+
Retailer 5
-
£2,576 GBP
View
Final sale: no returns
B
Retailer 6
-
£2,647 GBP
View
B+
Retailer 7
-
£2,697 GBP
View
B+
Retailer 8
-
£2,816 GBP
View
Retailer 9
-
£2,818 GBP
View
Price last confirmed 9 days ago
B
Retailer 10
-
£2,959 GBP
View
B
Retailer 11
-
£3,130 GBP
View
B
Retailer 12
-
£3,130 GBP
View
B
Retailer 13
-
£3,153 GBP
View
B
Retailer 14
-
£3,235 GBP
View
Retailer 15
-
£3,335 GBP
View
Price last confirmed 34 days ago
B
Retailer 16
-
£3,467 GBP
View
Retailer 17
-
£3,520 GBP
View
Price last confirmed 15 days ago
B
Retailer 18
-
£3,797 GBP
View
Most Expensive
MOH London
054AE1C01 · Oct 26
£5,209 GBP
View
Price last confirmed 11 days ago
18 more retailers have this diamond
Prices start from £2,391 GBPSave up to £1,405 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
£2,391 GBP