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Cushion|Natural|GIA

1.54ct I SI1 Cushion Natural Diamond

EX • I/SI1 • GIA 2557536295

Certificate GIA 2557536295

Diamond specifications and retailer prices

From £2,379 GBP
A$4,912 AUD
As of November 2, 2026
Save £2,379 GBP (50%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £4,758 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 1.54ct natural cushion diamond

This 1.54ct natural cushion sits in the one-and-a-half to two 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 2557536295. Listed at 6 retailers as of October 29, 2026, with prices from £2,379 to £4,758, a £2,379 spread on the same certified stone. MOH London lists it at £4,758. 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

1.54
Carat
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2557536295
Dimensions7.58 × 5.76 × 3.97 mm
L/W Ratio1.32
Key to symbols
Twinning Wisp, Feather, Needle
Top View
7.58 mm5.76 mm1.54 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2557536295
Side View
Table 65.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 68.9%

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 2
Current: £4,758 GBP|Low: £2,285 GBP|High: £5,348 GBP|Avg: £3,344 GBP|-11.0%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 2, 2026
Retailer 5£2,613 GBP
Retailer 4£2,683 GBP
Retailer 2£2,685 GBP
Retailer 3£3,313 GBP
MOH London£4,758 GBP

41 data points across 5 retailers

6 retailers£2,379 GBP to £4,758 GBP

A
Cheapest Retailer
-
£2,379 GBP
A$4,912 AUD
A
Retailer 2
-
£2,613 GBP
$3,506 USD
View
Final sale: no returns
A
Retailer 3
-
£2,683 GBP
$3,600 USD
View
A
Retailer 4
-
£2,685 GBP
View
A
Retailer 5
-
£3,313 GBP
€4,234 EUR
View
Most Expensive
B
MOH London
0D2FFEE6F · Oct 29
£4,758 GBP
View
5 more retailers have this diamond
Prices start from £2,379 GBPSave up to £2,379 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
1.54ct Cushion
£2,379 GBP