Beryl is a mineral, not a geometric shape. It forms crystals that can have different shapes, but it doesn't have a fixed number of sides.

Beryl crystals are often hexagonal prisms, which means they have six sides. However, they can also form in other shapes like:

* Equant: Rounded, with no clear sides.

* Tabular: Flat and plate-like.

* Prismatic: Long and thin, with many sides.

So, the number of sides on a beryl crystal depends on the specific crystal's formation.