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Cushion|Natural|GIA

1.30ct I SI1 Cushion Natural Diamond

ID • I/SI1 • GIA 2557251710

Certificate GIA 2557251710

Diamond specifications and retailer prices

From £1,883 GBP
As of November 6, 2026
Save £1,693 GBP (47%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £3,576 GBP at MOH London · As of November 2, 2026
View at MOH London

About this 1.3ct natural cushion diamond

This 1.3ct natural cushion sits in the one-and-a-quarter to one-and-a-half 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 2557251710. Listed at 8 retailers as of November 2, 2026, with prices from £1,883 to £3,576, a £1,693 spread on the same certified stone. MOH London lists it at £3,576. 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

1.30
Carat
I
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2557251710
Dimensions7.03 × 5.46 × 3.81 mm
L/W Ratio1.29
Culet sizeNone
Key to symbols
Crystal, Cloud, Needle, Natural
Top View
7.03 mm5.46 mm1.30 ctI / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2557251710
Side View
Table 55.0%CrownGirdlePavilionCulet: 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: £3,576 GBP|Low: £1,727 GBP|High: £3,620 GBP|Avg: £2,393 GBP
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 7£1,883 GBP
Retailer 6£1,965 GBP
Retailer 5£2,041 GBP
Retailer 3£2,161 GBP
Retailer 8£2,287 GBP
Retailer 2£2,377 GBP
Retailer 4£2,492 GBP
MOH London£3,576 GBP

45 data points across 8 retailers

8 retailers£1,883 GBP to £3,576 GBP

A
Cheapest Retailer
-
£1,883 GBP
Final sale: no returns
A
Retailer 2
-
£1,965 GBP
View
Retailer 3
-
£2,041 GBP
View
Price last confirmed 9 days ago
A
Retailer 4
-
£2,161 GBP
View
Retailer 5
-
£2,287 GBP
View
Price last confirmed 31 days ago
B+
Retailer 6
-
£2,377 GBP
View
B+
Retailer 7
-
£2,492 GBP
View
Most Expensive
B
MOH London
AA3B9E014 · Nov 2
£3,576 GBP
View
7 more retailers have this diamond
Prices start from £1,883 GBPSave up to £1,693 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
1.30ct Cushion
£1,883 GBP