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Cushion|Natural|GIA

0.31ct J SI1 Cushion Natural Diamond

EX • J/SI1 • GIA 2558185031

Certificate GIA 2558185031

Diamond specifications and retailer prices

From £126 GBP
₹16,049 INR
As of November 1, 2026
Save £293 GBP (70%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £419 GBP at MOH London · As of November 1, 2026
View at MOH London

About this 0.31ct natural cushion diamond

This 0.31ct natural cushion sits in the sub-half-carat band, graded J 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 2558185031. Listed at 9 retailers as of November 1, 2026, with prices from £126 to £419, a £293 spread on the same certified stone. MOH London lists it at £419. 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

0.31
Carat
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceStrong
OriginNatural
Grading LabGIA
CertificateGIA 2558185031
Dimensions3.87 × 3.85 × 2.64 mm
L/W Ratio1.01
Culet sizeNone
Key to symbols
Crystal
Top View
3.87 mm3.85 mm0.31 ctJ / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceStrong
CertificateGIA 2558185031
Side View
Table 62.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 68.6%

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 1
Current: £419 GBP|Low: £125 GBP|High: £430 GBP|Avg: £283 GBP|-2.6%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 2, 2026
Retailer 3£126 GBP
Retailer 6£195 GBP
Retailer 7£209 GBP
Retailer 5£281 GBP
Retailer 2£282 GBP
Retailer 8£302 GBP
Retailer 9£313 GBP
Retailer 4£358 GBP
MOH London£419 GBP

38 data points across 9 retailers

9 retailers£126 GBP to £419 GBP

A
Cheapest Retailer
-
£126 GBP
₹16,049 INR
B+
Retailer 2
-
£195 GBP
$261 USD
View
B+
Retailer 3
-
£209 GBP
$280 USD
View
B+
Retailer 4
-
£281 GBP
ZAR 6,081 ZAR
View
B+
Retailer 5
-
£282 GBP
View
B
Retailer 6
-
£302 GBP
$404 USD
View
Retailer 7
-
£313 GBP
A$645 AUD
View
Price last confirmed 29 days ago
B
Retailer 8
-
£358 GBP
€457 EUR
View
Most Expensive
B
MOH London
84E5E8465 · Nov 1
£419 GBP
View
8 more retailers have this diamond
Prices start from £126 GBPSave up to £293 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
0.31ct Cushion
£126 GBP