Pearls are formed inside the shells of certain mollusks as a defense mechanism against a potentially threatening irritant or parasite.

The value of pearls is determined by their size, shape, color, luster, surface quality, and symmetry, with natural pearls being the most prized.

Pearl farming can be sustainable, as it involves the cultivation of pearls in a way that minimizes environmental impact and supports the local ecosystem.

To maintain the luster of pearls, it's important to keep them away from harsh chemicals, perfumes, and cosmetics, and to gently wipe them with a soft cloth after wearing.

Pearls are durable and can be worn daily, but it's best to avoid exposing them to harsh conditions and to store them separately from other jewelry to prevent scratching.