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Cushion|Natural|GIA

1.20ct I SI1 Cushion Natural Diamond

EX • I/SI1 • GIA 1553750815

Certificate GIA 1553750815

Diamond specifications and retailer prices

From £1,405 GBP
As of November 6, 2026
Save £1,866 GBP (57%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £3,272 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 1553750815. Listed at 17 retailers as of November 4, 2026, with prices from £1,405 to £3,272, a £1,866 spread on the same certified stone. MOH London lists it at £3,272. 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
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1553750815
Dimensions7.02 × 5.24 × 3.60 mm
L/W Ratio1.34
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Cloud, Needle
Top View
7.02 mm5.24 mm1.20 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1553750815
Side View
Table 64.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 68.7%

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: £3,272 GBP|Low: £1,405 GBP|High: £3,315 GBP|Avg: £2,059 GBP|-1.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 8£1,405 GBP
Retailer 2£1,470 GBP
Retailer 6£1,641 GBP
Retailer 3£1,816 GBP
Retailer 9£1,872 GBP
Retailer 7£1,981 GBP
Retailer 5£2,285 GBP
Retailer 4£2,324 GBP
MOH London£3,272 GBP

26 data points across 9 retailers

17 retailers£1,405 GBP to £3,272 GBP

A
Cheapest Retailer
-
£1,405 GBP
A
Retailer 2
-
£1,470 GBP
View
A
Retailer 3
-
£1,641 GBP
View
B+
Retailer 4
-
£1,727 GBP
View
Final sale: no returns
B+
Retailer 5
-
£1,742 GBP
View
B+
Retailer 6
-
£1,745 GBP
View
B+
Retailer 7
-
£1,816 GBP
View
Retailer 8
-
£1,872 GBP
View
Price last confirmed 9 days ago
B+
Retailer 9
-
£1,957 GBP
View
B+
Retailer 10
-
£1,977 GBP
View
B+
Retailer 11
-
£1,981 GBP
View
B+
Retailer 12
-
£1,995 GBP
View
B+
Retailer 13
-
£2,032 GBP
View
Retailer 14
-
£2,097 GBP
View
Price last confirmed 31 days ago
B+
Retailer 15
-
£2,285 GBP
View
B
Retailer 16
-
£2,324 GBP
View
Most Expensive
B
MOH London
98F9CC2F9 · Nov 4
£3,272 GBP
View
16 more retailers have this diamond
Prices start from £1,405 GBPSave up to £1,866 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
£1,405 GBP