please check this pearl

[langgengdw]

Hi everybody, I am newbie here, I hope I can learn many things bout pearls here
I really love pearls, and I have a lot of them from diver in indonesia, I am indonesian too
A month ago a diver gave me a pearl that makes me confused, please help me to explain this pearl, lets check this pictures.

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[KAC]

that large and roundish I doubt it's natural. Looks like a very badly blemished cultured South Sea pearl.