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rare

leland blue

iron-smelting slag

leland blue, illustrated

The tell

Glassy blue-grey, often shot through with bubbles or frozen froth. It is not a rock. It is iron-smelting waste from the 1870s.

Man-made, and that is the appeal rather than a mark against it. Leland and Fishtown are where it comes from, and it is finite: nobody is making any more.

What it gets mistaken for

The facts

Put it on the shelf

Every stone on this chart is drawn and kiss-cut at three inches. The rarer the stone, the fewer exist: only 250 leland blue will ever be printed, then the run is retired.

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