Explica razonadamente si son o no minerales un cubito de hielo y el coral usado en joyería

Translation:

Explain reasonably whether or not an ice cube and the coral used in jewelry are minerals.

Ice cube is not a mineral.

The coral is not a mineral.

Explanation:

An ice cube is not a mineral because it has been made by human beings by freezing water and giving it an artificial geometric shape. But natural ice is considered a mineral.

The coral used in jewelry is not a mineral because it is not inorganic, but is formed by an animal, corals. The coral is made up of the skeleton of colonies of marine invertebrates, polyps, formed by calcium carbonates in the form of calcite, arranged in radial fibers that sometimes contain remains of organic materials.

the most common type of reef is the fringing reef. this type of reef grows seaward directly from the shore. they form borders along the shoreline and surrounding islands.