Whisky investment intelligence
11 Diamond expressions tracked across 70+ auction observations.
12-mo avg return
+10.1%
Median return
+2.9%
Volatility (±)
24.4%
Verdict
Strong recent momentum
Diamond bottles with the largest year-over-year median price gains.
| Bottle | Current median | 12mo ago | Change |
|---|---|---|---|
| Diamond 1999 15 Year Old Demerara Rum | £600 | £400 | +57.9% |
| Diamond 12 Year Old Rum Cadenhead’s | £50 | £50 | +4.8% |
| Diamond 2003 14 Year Old For Milano Rum Festival | £100 | £100 | +2.9% |
| Diamond 2003 The Wild Parrot | £150 | £150 | -6.7% |
| Diamond 2007 Guyana Rum Mezan | £100 | £100 | -8.3% |
Highest median auction price — the established collectables.
Affordable Diamond expressions for first-time collectors — at least 3 auction observations to confirm market liquidity.
Diamond bottles that have softened — either fair-value entry points or bottles to avoid, depending on your thesis.
| Diamond 2007 Guyana Rum Mezan | £100 | -8.3% |
| Diamond 2003 The Wild Parrot | £150 | -6.7% |
Past auction prices are the most defensible signal of a bottle's collectable value — but they are not a forecast. The data below comes from 70+ hammered lots across six major auction houses; none of it is curated or pay-for-placement.
Three rules-of-thumb a working collector should keep in mind:
For a deeper view, the full Diamond catalog with live prices lists every tracked expression with its full price history chart.
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