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Cushion|Natural|GIA

1.31ct I SI2 Cushion Natural Diamond

EX • I/SI2 • GIA 5553380503

Certificate GIA 5553380503

Diamond specifications and retailer prices

From £1,845 GBP
As of November 6, 2026
Save £2,244 GBP (55%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £4,089 GBP at MOH London · As of November 4, 2026
View at MOH London

About this 1.31ct natural cushion diamond

This 1.31ct natural cushion sits in the one-and-a-quarter to one-and-a-half carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5553380503. Listed at 13 retailers as of November 4, 2026, with prices from £1,845 to £4,089, a £2,244 spread on the same certified stone. MOH London lists it at £4,089. 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

1.31
Carat
I
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5553380503
Dimensions7.57 × 5.65 × 3.67 mm
L/W Ratio1.34
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather, Crystal, Cloud, Needle
Top View
7.57 mm5.65 mm1.31 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 5553380503
Side View
Table 67.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 64.9%

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: £4,089 GBP|Low: £1,845 GBP|High: £4,184 GBP|Avg: £2,579 GBP|-2.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 9£1,845 GBP
Retailer 2£1,914 GBP
Retailer 11£2,263 GBP
Retailer 4£2,411 GBP
Retailer 3£2,472 GBP
Retailer 7£2,536 GBP
Retailer 10£2,559 GBP
Retailer 6£2,569 GBP
Retailer 8£2,638 GBP
Retailer 5£2,854 GBP
MOH London£4,089 GBP

28 data points across 11 retailers

13 retailers£1,845 GBP to £4,089 GBP

A
Cheapest Retailer
-
£1,845 GBP
A
Retailer 2
-
£1,914 GBP
View
B+
Retailer 3
-
£2,263 GBP
View
Final sale: no returns
B+
Retailer 4
-
£2,306 GBP
View
B+
Retailer 5
-
£2,411 GBP
View
B+
Retailer 6
-
£2,451 GBP
View
Retailer 7
-
£2,472 GBP
View
Price last confirmed 9 days ago
B+
Retailer 8
-
£2,536 GBP
View
B+
Retailer 9
-
£2,559 GBP
View
B+
Retailer 10
-
£2,569 GBP
View
B+
Retailer 11
-
£2,638 GBP
View
B+
Retailer 12
-
£2,854 GBP
View
Most Expensive
B
MOH London
4213526FE · Nov 4
£4,089 GBP
View
12 more retailers have this diamond
Prices start from £1,845 GBPSave up to £2,244 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
1.31ct Cushion
£1,845 GBP