A Cassis pearl is a rare and naturally occurring non-nacreous pearl. Unlike traditional nacreous pearls, Cassis pearls have a porcelain-like surface with soft, flame-like patterns and a unique glossy sheen. They are typically oval to irregular in shape and can display shades of orange, brown, cream, or pink, depending on the host shell species. Extremely uncommon and often mistaken for conch pearls, Cassis pearls are highly prized by collectors and jewelry enthusiasts for their rarity and exotic beauty. Their scarcity in both the wild and the market makes them a distinctive treasure for connoisseurs of natural pearls.