Complex sentence: Such influence may be the great silver ring from Trichtingen, near Stuttgart since silver is not the prime medium of high-status craftsmanship in the Celtic world, though it is characteristic of Thracian/Dacian metal-working.
Split into simpler sentences: Such influence may be seen in the great silver ring from Trichtingen, near Stuttgart. Silver is not the prime medium of high-status craftsmanship in the Celtic world but is characteristic of Thracian/Dacian metal-working.