Append a new subrule to The Mosaic titled Materials with the following text

The following is a list of materials that a Tile can be made out of. Presented in the form “{character}: {name}. ‘’{description}’’ ” where {character} is the letter used for the material in a Tile, {name} is the longform name of the material and {description} is flavor text.
*s: Sand. ‘‘colored sand imported from merchant ships or collected on the beach.’‘
*p: Paint. ‘‘locally crafted paint that the monks make from the surrounding area.’‘
*i: Ink. ‘‘created from various materials, usually charcoal is the easiest to make while colors other than black are harder to create.’‘
*w: Wood. ‘‘stained wood from the nearby forest.’‘
*g: Glass. ‘‘see through or opaque, this stained glass is beautiful but requires a chain of processes to craft properly.’‘
*m: Precious Metal. ‘‘Metals that are traded or smelted locally. Commonly the ones used in jewelry are used.’‘
*j: Jewel. ‘‘Rare minerals that are found or traded for. Cut with specific tools by the monks, opals, jade, diamond, agate and emeralds among others are used in the mosaic.’‘
Tiles whose content contains a character on this list are made out of those materials and can be referred to by the longform name, as in a “Sand Tile” or a “Wood Glass Tile”.