Vers 2 BC Egyptians were already producing glass paste beads. In ancient Egypt, the most sought-after jewelry was in stones, serpentine, agate, turquoise, lapis lazuli and other semi-precious stones were used as pearls. Later, the work of the silica will make it possible to produce pearls less expensive than stones and to master their shapes and colors.
To color the pearls, the first glass craftsmen then usedcopper oxide allowing to obtain turquoise blue coloring, ormanganese oxide allowing to obtain purple or black shades imitating amethyst or agate. The techniques of production in quantity go back to some 2 years before our era.
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