Pebbles are usually formed from natural rock that has been pulverized by exposure to water on beaches, lakes, and rivers. There are also stones made of artificial materials such as concrete, brick, and glass. While these are not rocks, they often form attractive pebbles, some of which are sometimes difficult to distinguish from rocks. If you want to buy pebbles, you can visit this website https://therockyard.com.au/.

A pebble is a clast of rock with a particle size of 4–64 mm (0.16–2.52 in). Pebbles are larger than granules (2–4 mm (0.079–0.157 in) in diameter but smaller than cobbles (64–256 mm).

Pebbles come in a variety of colors and textures, and they may have streaks of quartz or other minerals, known as veins. Pebbles are mostly smooth, but depending on how frequently they come into contact with the sea, they may have contact marks from other rocks or pebbles. 

There are also pebbles made of man-made materials such as concrete, bricks, and glass. Stay away from cliff edges, ledges, and boulders as rock slides can occur at any time, especially after wet weather.

You need something sturdy to store your pebbles collection. Be sure to use jagged or rough specimens separately so as not to damage the rest of your stone. You may need to wrap the samples individually to protect them from scratches.