Glass is an ancient material, one of the most ancient known and used by man. The first glass used was natural obsidian, volcanic glass, used to make arrowheads, knives, jewelry, etc. Glass objects created of man made glass are reported to have been found as early from as 4,500 BC in Mesopotamia and 3,000 BC in ancient Egypt. Many consider glass to have no metaphysical properties, but others who are aware, realize that glass has energy like all else in the Universe, and thus has its own set of properties. Glass is a melding of the traditional four elements, because through fire and air the silica earth element is made molten and transmuted into a liquid only to return to its earthly state as an apparent solid. It can be made to focus light or allow light to pass through invisibly or carry lightwaves great distances through tiny strands. Metaphysically, glass represents and carries the energies of transformation, merging of elements, rebirth, focus and communication. The colors of the glass bring the vibrations of those specific color energies.
Please note that healing crystal meanings are spiritual supports to healing and are not prescriptions or healthcare information.