be made of sth
fixed phr..fixed phr.. This phrase tells you what material something is created from. For example, a chair can be made of wood.
fixed phr.. A passive verb construction used to state the constituent material of an object.
This table is made of wood.
She bought a beautiful ring that was made of pure silver.
The ancient statue, which was surprisingly well-preserved, was made of a rare type of marble quarried nearby.
Use 'made of' when you can still see the original material in the final object.
Contrast 'made of' (material is unchanged, e.g., a table of wood) with 'made from' (material is transformed, e.g., paper from wood) and 'made with' (one ingredient among many, e.g., a cake with flour).
This ring is made in gold.This ring is made of gold.Use the preposition 'of' to state the material something is composed of.