Smaragd

These following bodies do not draw: smaragd, achates, corneolus, pearl, jaspis, chalcedonius, alabaster, porphyry, coral, marble, touchstone, haematites, or bloodstone […]

Nor far they steppèd when on culm'inant height / where stretcht a gem-enamel'd mead they stood; / Smaragd and Ruby-strewn, so rich the sight / presumed 'twas Paradisial floor they trod.