Dating ceramic artifacts
The heat from the fire melted the rocks and mixed them with the sand, forming molten glass.Archeologists have not been able to confirm Pliny’s recount.It is known that, around 7,000 BCE, people were already using sharp tools made from obsidian, a natural occurring volcanic glass.The Roman historian Pliny reported that the first man-made glass was accidentally produced by Phoenician merchants in 5,000 BCE, when, while resting on a beach, they placed cooking pots on sodium-rich rocks near a fire.Throughout the 16th century CE (CE = Common Era), earthenware remained the main class of ceramic products manufactured in Europe and the Middle East.
At the beginning of the Bronze Age, glazed pottery was produced in Mesopotamia.
Decorations also involved the use oxidizing and reducing atmosphere during firing to achieve special effects.
Greek Attic vases of the 6th and 5th centuries BCE are considered the apex of this evolution.
We still use clay and water to make the material mixture , the cooking and glazing are achieved in the very same methods as in the early age of ceramic manufacturing, although bottle ceramic manufacturers created modern methods , using MOLDS to shape the bottles.
In Glass bottle making, there is a 2 piece mold ,made of iron and only a few molds are necessary to produce large numbers of bottles.