Are Pebbles and Gravel the Same?

Many people often confuse pebbles with gravel, but they are not the same. Here are some key differences between them:

Appearance

Pebbles : Are small, smooth, rounded stones naturally polished by water. Their smoothness and rounded shape make them visually appealing and popular for decorative purposes.

Gravel : Consists of small, rough rock fragments. It can be either rounded or angular, depending on its source and processing. Its rough texture gives it a more rustic and natural look.

Size

Pebbles : Typically range from 4 to 64 millimeters in diameter according to the Udden-Wentworth scale. Generally, they are larger than granules and smaller than cobbles.

Gravel : Can overlap with pebbles in size, but it also includes smaller particles down to 2 millimeters. The term gravel encompasses a wide range of sizes and usually includes a mix of particle sizes.

Formation

Pebbles : Formed by natural processes of erosion and weathering. They are often found on beaches and riverbeds, where the continuous action of flowing water smoothens their surfaces over time.

Gravel : Can be formed from a variety of rock types through both natural weathering and human activities such as quarrying and crushing. It can consist of small stones that have been naturally weathered or artificially crushed into fragments.

Usage

Pebbles : Due to their aesthetic appeal, are commonly used for decorative purposes in landscaping, such as creating garden paths, borders, and ornamental designs. They are also popular in aquariums and as a decorative layer in potted plants.

Gravel : Has a more utilitarian use. It is widely used in construction for driveways, roads, and as a component of concrete. It provides structural support due to its irregular shapes and sizes, which help it lock together. Additionally, gravel is used in drainage systems and can be spread around plants to prevent weed growth.

In summary, while pebbles and gravel may seem similar at first glance, they have distinct characteristics that set them apart. Whether you choose pebbles or gravel depends on your specific needs and preferences for a project.

Written By Wendy Lin