Collectible Trash "Sea glass and beach glass are similar but come from two different types of water. Sea glass is physically andchemically weathered glass found on beaches along bodies of salt water. These weathering processes produce natural frosted glass. "Genuine sea glass" can be collected as a hobby and can be used to make jewelry. Beach glass comes from fresh water and in most cases has a different pH balance, and has a less frosted appearance than sea glass. Sea glass takes any where between 20 -50 years to acquire its characteristic texture and shape".