"The Eye of Cronus does have an appraisal ability, but it's not as simple as regular appraisal. It involves tracing back the timeline of the object you wish to appraise. For example, if you appraise a random rock from some ordinary soil, you might trace its origins back millions of years to when that rock was first formed."
"Understanding its formation, the materials it contains, and more," Lascivia explained. "That's why when using the Eye of Cronos, it's crucial to clarify your objective beforehand. Do you simply want to uncover a bit of history about the object you're appraising, or do you desire something deeper? The extent of information revealed depends on the user's intentions, and correspondingly, the price paid for utilizing the ability is determined by the depth of knowledge sought."