lydius

Among his numerous works are: "Lapis lydius boni spiritus";

The Catholic Encyclopedia, Volume 14: Simony-Tournon 1840-1916 1913

For, during our short stay, besides the _lapis lydius_, which seems common all over the South Sea, we found a species of cream-coloured whetstone, sometimes variegated with blacker or whiter veins, as marble; or in pieces, as _brecciæ_; and common writing slate, as well as a coarser sort; but we saw none of them in their natural state; and the natives brought some pieces of a coarse whitish pumice-stone.

A General History and Collection of Voyages and Travels, Volume 16 Robert Kerr 1784

Nor did we see the least appearance of any other stone, except a few small blue pebbles strewed about the _fiatookas_; and the smooth, solid black stone, something like the _lapis lydius_, of which the natives make their hatchets.

A General History and Collection of Voyages and Travels — Volume 15 Forming A Complete History Of The Origin And Progress Of Navigation, Discovery, And Commerce, By Sea And Land, From The Earliest Ages To The Present Time Robert Kerr 1784