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Cushion|Natural|GIA

1.20ct K SI1 Cushion Natural Diamond

EX • K/SI1 • GIA 1553950564

Certificate GIA 1553950564

Diamond specifications and retailer prices

From £1,033 GBP
As of November 6, 2026
Save £1,376 GBP (57%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £2,408 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 K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1553950564. Listed at 14 retailers as of November 4, 2026, with prices from £1,033 to £2,408, a £1,376 spread on the same certified stone. MOH London lists it at £2,408. 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
K
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1553950564
Dimensions7.09 × 5.46 × 3.75 mm
L/W Ratio1.30
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Cloud, Indented Natural, Needle, Natural
Top View
7.09 mm5.46 mm1.20 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1553950564
Side View
Table 68.0%CrownGirdle: STK-VTKPavilionCulet: 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: £2,408 GBP|Low: £1,033 GBP|High: £2,440 GBP|Avg: £1,548 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£1,033 GBP
Retailer 2£1,083 GBP
Retailer 6£1,275 GBP
Retailer 9£1,378 GBP
Retailer 4£1,435 GBP
Retailer 5£1,496 GBP
Retailer 7£1,682 GBP
Retailer 3£1,872 GBP
MOH London£2,408 GBP

33 data points across 9 retailers

14 retailers£1,033 GBP to £2,408 GBP

A
Cheapest Retailer
-
£1,033 GBP
A
Retailer 2
-
£1,083 GBP
View
B+
Retailer 3
-
£1,275 GBP
View
B+
Retailer 4
-
£1,299 GBP
View
B+
Retailer 5
-
£1,300 GBP
View
Retailer 6
-
£1,378 GBP
View
Price last confirmed 22 days ago
B+
Retailer 7
-
£1,422 GBP
View
B+
Retailer 8
-
£1,434 GBP
View
B+
Retailer 9
-
£1,435 GBP
View
B+
Retailer 10
-
£1,480 GBP
View
B+
Retailer 11
-
£1,496 GBP
View
B+
Retailer 12
-
£1,682 GBP
View
B+
Retailer 13
-
£1,872 GBP
View
Most Expensive
B
MOH London
A3A101AE3 · Nov 4
£2,408 GBP
View
13 more retailers have this diamond
Prices start from £1,033 GBPSave up to £1,376 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
£1,033 GBP