"An emerald is as green as grass"

An emerald is as green as grass;
A ruby red as blood;
A sapphire shines as blue as heaven;
A flint lies in the mud.

A diamond is a brilliant stone,
To catch the world's desire;
An opal holds a fiery spark;
But a flint holds fire.


Authorship: By Christina Georgina Rossetti (1830-1894), no tittle, from Sing-song: a nursery rhyme book, published 1872.