หิน

The cobblestone is named after its shape resembling a goose egg. As a pure natural stone, cobblestones are taken from the sand and stone mountains that were raised by ancient river beds after experiencing crustal movements thousands of years ago. They undergo continuous compression and friction during the impact of mountain floods and water transportation.

In the process of billions of years of evolution, the pebbles have been subjected to the motion of waves and water, and have lost their irregular edges due to collision and friction with the gravel. They have also been buried deep underground and silent for millions of years, along with sediment.