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Cushion|Natural|GIA

1.31ct E SI1 Cushion Natural Diamond

EX • E/SI1 • GIA 1545944738

Certificate GIA 1545944738

Diamond specifications and retailer prices

From £3,272 GBP
As of November 6, 2026
Save £3,268 GBP (50%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £6,540 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 E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1545944738. Listed at 18 retailers as of November 4, 2026, with prices from £3,272 to £6,540, a £3,268 spread on the same certified stone. MOH London lists it at £6,540. 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
E
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Pavilion angle35.89°
OriginNatural
Grading LabGIA
CertificateGIA 1545944738
Dimensions7.12 × 5.60 × 3.91 mm
L/W Ratio1.27
Key to symbols
Crystal, Feather, Needle
Top View
7.12 mm5.60 mm1.31 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1545944738
Side View
Table 61.0%CrownGirdle: STK-VTKPavilion 35.89°Culet: NoneDepth 69.8%

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: £6,540 GBP|Low: £3,225 GBP|High: £6,637 GBP|Avg: £4,545 GBP|-1.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 6, 2026
Retailer 5£3,272 GBP
Retailer 3£3,722 GBP
Retailer 9£3,883 GBP
Retailer 8£4,033 GBP
Retailer 6£4,300 GBP
Retailer 11£4,307 GBP
Retailer 4£4,458 GBP
Retailer 10£4,595 GBP
Retailer 12£4,595 GBP
Retailer 13£4,752 GBP
Retailer 2£4,836 GBP
Retailer 7£5,431 GBP
MOH London£6,540 GBP

45 data points across 13 retailers

18 retailers£3,272 GBP to £6,540 GBP

A
Cheapest Retailer
-
£3,272 GBP
B+
Retailer 2
-
£3,517 GBP
View
B+
Retailer 3
-
£3,518 GBP
View
B+
Retailer 4
-
£3,561 GBP
View
B+
Retailer 5
-
£3,722 GBP
View
Final sale: no returns
B+
Retailer 6
-
£3,780 GBP
View
B+
Retailer 7
-
£3,883 GBP
View
Retailer 8
-
£4,033 GBP
View
Price last confirmed 8 days ago
B+
Retailer 9
-
£4,300 GBP
View
B
Retailer 10
-
£4,307 GBP
View
Retailer 11
-
£4,458 GBP
View
Price last confirmed 28 days ago
B+
Retailer 12
-
£4,595 GBP
View
B+
Retailer 13
-
£4,595 GBP
View
B
Retailer 14
-
£4,752 GBP
View
B+
Retailer 15
-
£4,836 GBP
View
Retailer 16
-
£4,909 GBP
View
Price last confirmed 14 days ago
B
Retailer 17
-
£5,431 GBP
View
Most Expensive
B
MOH London
23ED74DE8 · Nov 4
£6,540 GBP
View
17 more retailers have this diamond
Prices start from £3,272 GBPSave up to £3,268 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
£3,272 GBP