Peridot, being a relatively soft stone, requires gentle cleansing. The most recommended method is smudging with sage or palo santo, or a brief rinse under clear water, avoiding prolonged contact.
To fully restore its solar energy, you can expose Peridot to daylight or, ideally, place it in moonlight, especially during a full moon. A quartz cluster or an amethyst geode are also excellent recharging supports.