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Cushion|Natural|GIA

1.20ct G SI1 Cushion Natural Diamond

EX • G/SI1 • GIA 7558609256

Certificate GIA 7558609256

Diamond specifications and retailer prices

From £2,161 GBP
As of November 6, 2026
Save £2,637 GBP (55%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £4,943 GBP at Queensmith · As of October 28, 2026
View at Queensmith

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 7558609256. Listed at 19 retailers as of November 2, 2026, with a 122% 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
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 7558609256
Dimensions7.46 × 5.35 × 3.58 mm
L/W Ratio1.39
Girdle conditionPolished
Culet sizeNone
Key to symbols
Feather, Crystal, Cloud, Indented Natural
Top View
7.46 mm5.35 mm1.20 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 7558609256
Side View
Table 67.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 66.9%

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: £4,943 GBP|Low: £2,142 GBP|High: £5,043 GBP|Avg: £3,208 GBP|+0.9%
Queensmith
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 6, 2026
Retailer 14£2,161 GBP
Retailer 2£2,242 GBP
Retailer 5£2,569 GBP
Retailer 11£2,634 GBP
Retailer 4£2,648 GBP
Retailer 8£2,782 GBP
Retailer 3£2,868 GBP
Retailer 12£2,907 GBP
Retailer 15£2,977 GBP
Retailer 6£3,064 GBP
Retailer 7£3,089 GBP
Retailer 9£3,339 GBP
Retailer 10£3,501 GBP
Retailer 13£4,797 GBP
Queensmith£4,943 GBP

24 data points across 15 retailers

19 retailers£2,161 GBP to £4,797 GBP

B+
Cheapest Retailer
-
£2,161 GBP
B+
Retailer 2
-
£2,242 GBP
View
B+
Retailer 3
-
£2,569 GBP
View
B+
Retailer 4
-
£2,634 GBP
View
B+
Retailer 5
-
£2,648 GBP
View
Final sale: no returns
B+
Retailer 6
-
£2,749 GBP
View
B+
Retailer 7
-
£2,749 GBP
View
B+
Retailer 8
-
£2,782 GBP
View
Retailer 9
-
£2,868 GBP
View
Price last confirmed 9 days ago
B+
Retailer 10
-
£2,907 GBP
View
B
Retailer 11
-
£2,908 GBP
View
B
Retailer 12
-
£2,977 GBP
View
B
Retailer 13
-
£3,064 GBP
View
B
Retailer 14
-
£3,089 GBP
View
Retailer 15
-
£3,209 GBP
View
Price last confirmed 34 days ago
B
Retailer 16
-
£3,339 GBP
View
B
Retailer 17
-
£3,501 GBP
View
B
Retailer 18
-
£4,797 GBP
View
Most Expensive
Queensmith
7558609256 · Oct 28
£4,943 GBP
View
Price last confirmed 9 days ago
18 more retailers have this diamond
Prices start from £2,161 GBPSave up to £2,637 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
£2,161 GBP