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Cushion|Natural|HRD

0.31ct F SI1 Cushion Natural Diamond

EX • F/SI1 • HRD 260000187992

Certificate HRD 260000187992

Diamond specifications and retailer prices

From £227 GBP
$305 USD
As of October 29, 2026
Save £260 GBP (53%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £487 GBP at MOH London · As of November 2, 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 F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by HRD 260000187992. Listed at 6 retailers as of October 29, 2026, with prices from £227 to £487, a £260 spread on the same certified stone. MOH London lists it at £487. 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
F
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabHRD
CertificateHRD 260000187992
Dimensions4.49 × 3.44 × 2.40 mm
L/W Ratio1.31
Top View
4.49 mm3.44 mm0.31 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateHRD 260000187992
Side View
Table 63.0%CrownGirdle: FAC-FACPavilionCuletDepth 69.6%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: £487 GBP|Low: £227 GBP|High: £493 GBP|Avg: £328 GBP|-0.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 3, 2026
Retailer 5£227 GBP
Retailer 2£275 GBP
Retailer 4£289 GBP
Retailer 6£308 GBP
Retailer 3£362 GBP
MOH London£487 GBP

43 data points across 6 retailers

6 retailers£227 GBP to £487 GBP

A
Cheapest Retailer
-
£227 GBP
$305 USD
A
Retailer 2
-
£275 GBP
View
A
Retailer 3
-
£289 GBP
View
B+
Retailer 4
-
£308 GBP
$414 USD
View
B+
Retailer 5
-
£362 GBP
€463 EUR
View
Most Expensive
B
MOH London
FE4144D03 · Nov 2
£487 GBP
View
5 more retailers have this diamond
Prices start from £227 GBPSave up to £260 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
£227 GBP