The early Roman Empire showed a simple and strong characteristic. Most of people preferred to wear ring-type seal made of iron.
Later, the more powerful the Roman Empire became, the more power was expanded in the privileged classes in progression and the aristocracy was permitted to take a seal made out of gold.
Every single person started to use a seal regardless of whether they were aristocracies or commoners. As a result, there was a shortage of stone materials so a seal made of glass imitating stone increased instead of it.
In those days, portrait was often used for its design in general and there was a case that a seal was engraved with writings but most of its case, the letter mostly showed an owner of a seal. An ornate initial also came to be used in a engraving design after the period of Rome.
Its usage was to seal properties , tomb, house, warehouse, basket and bags containing antiques as of old . Moreover, custom of putting a piece of stamped lead on the package wrapping goods to guarantee its quality and prove its origin.