As a brief description

Write something short and sweet, ~30 words or less, including load, tags, and other game elements (see Tags). This approach is best for simple, non-magical artifacts, but it can also work for artifacts with a straightforward magical effect.

For examples, see any of the "various treasures" lists, like those of the Barrow Builders or the Stone Lords.

This artifact I've been creating doesn't need much description, so I write down:

Silver filigree sphere, fist-sized, vine-and-plant patterns (beautiful, Value 2)