The condition of lots can vary widely and the nature of the lots sold means that they are unlikely to be in a perfect condition. Lots are sold in the condition they are in at the time of sale.

Diamonds are bright and lively
Sapphires and emeralds with typical inclusions, some eye visible and surface reaching
This Sapphire and emerald ring is overall in excellent condition

The condition of lots sold can vary widely due to factors such as age, previous damage, restoration, repair and wear and tear. The nature of the lots sold means that they will rarely be in perfect condition. Lots are sold in the condition they are in at the time of sale