Final answer:
During a marriage, if a PIGS property appreciates in value, it is considered marital property and is subject to division between the spouses in case of divorce or separation.
Step-by-step explanation:
In many jurisdictions, property acquired during a marriage is considered marital or community property, which means it is jointly owned by both spouses. If a PIGS property appreciates in value during the marriage, it is likely to be considered a marital asset. In the event of divorce or separation, the appreciation in value would typically be subject to division between the spouses.