Green Peacock Pearls & MOP Mother of Pearl Necklace. Length - 120 cm Weight - 74g Green Peacock Pearls and Mother of Pearl (MOP) are both treasured for their unique, iridescent beauty, but they carry distinct symbolic meanings and origins. Green Peacock Pearls are highly valued, dark-toned pearls (often Tahitian) that symbolize balance, nature, hope, growth, and renewal. Mother of Pearl (MOP) is the shimmering, iridescent lining of mollusk shells, which symbolizes nurturing, protection, and calm. Item will be shipped by registered mail with tracking number.