South Sea Pearls are the most rare and extraordinary pearls you'll find in jewelry. They come from the white-lipped variety of the pinctada maxima oyster. The size is much larger than the average pearl, with exceptional smoothness and roundness. 
 
Pears symbolize wisdom aquired through experience. They are believed to attract wealth and luck as well as offer protection. Pearls can balance one's karma, strengthen relationships, and keep children safe. It also signifies the purity, generosity, integrity, and loyalty of its wearer.
 
Blue - The wearer will find love
Black or Gold - Wealth and Prosperity
Pink - Success, fame, and good fortune
Brown - Practicality, musculinity, dependability, and harmony
White - Innocence, beauty, purity, and new beginnings
 
(https://bellatory.com/fashion-accessories/pearl-myth)