The pebbles on the beach are formed from granite and other hard minerals broken down from mountain ranges and smoothed by sea erosion.
The beach is officially recognized by the Vietnam Book of Records as the beach with the most diverse and unique stone shapes and colors in Vietnam.
The formation process is ongoing, with the ocean continuously polishing new stones brought down from the inland mountains by seasonal streams.
During the spring season, the surrounding rocky outcrops are often covered in vibrant green sea moss, creating a sharp color contrast with the multi-colored pebbles.
Bãi đá bảy màu is a unique stretch of coastline in Cổ Thạch composed of millions of naturally rounded, multi-colored pebbles rather than sand. The pebbles are shaped and polished by the constant action of waves and currents over long periods. These stones vary in color, ranging from white and black to yellow, blue, and brown, created by mineral content within the rocks. The area is situated adjacent to the Cổ Thạch Pagoda and sits within the larger Cổ Thạch tourism area in Tuy Phong, Bình Thuận. It is a geological site known for its distinct aesthetic and contrasting colors against the surrounding turquoise sea. Access to the beach is open to the public as part of the coastal landscape.
The waterline where the wet, glistening pebbles appear the most vibrant and colorful.
Wear sturdy footwear as walking on the rounded, loose pebbles can be unstable and tiring.
Bring sun protection as the beach lacks natural shade.
Do not remove stones from the beach as it is a protected geological site.
Do not visit during midday heat when temperatures on the reflective, exposed stones become extreme.
Avoid picking up or collecting stones to help preserve the natural environment.
