A loose gem.
Diamond is a mineral and a gem. The main ore of diamond is called kimberlite.
the high flat land is called " plateau".
Rare minerals are called rare earth minerals. Their major metal constituents contain one or more rare earth elements. Some common hydrothermal rare minerals include zircon, gadolinite, brockite, and titanite.
A large, flat area of land is called a plain.
Table
According to my son's math homework a flat surface on a solid is called a face
Each flat face of a 3d object is called a face or a polygon!
It's called a face
It is a face of the polyhedron
If you are a cube, one of the sides is called a face. Same with a cone, the flat part is a face.
The prone position is lying flat on your front, face down. Lying flat face up is called prostrate.
it's called a face
The surface of a crystal is called a flat face or a facet.
Face.
A Purple Gem is called a Amethyst
A flat surface of a solid is usually the face of the solid. +++ Also sometimes called a "facet", particularly on solids having very many flat faces.