Between the roman empire and the renaissance was, what most historians call the middle ages. During the middle ages or "dark ages" as some term it much of the creativity of the world stagnated. There was still however jewelry being produced. We try to divide it by area and age (sub divisions of time). During this time goldsmiths were familiar with Roman techniques and the jewelry they produced was remarkable in quality as they slowed production and made slightly better craftsmanship.
Additionally we are always buyers and collectors of medieval era and renaissance era jewelry