Help Identify if Pearls are Faux, Cultured, or Natural

[mystics_fan]

Hello,
I hope you all can help me identify the pearls in a necklace I purchased online. I think the necklace is an antique and I would like help in identifying if the Peals are faux, cultured, or natural. I have seen post here where it may be possible to identify the difference based on the drill holes. I have managed to take some pictures of the drill hole of a few of the pearls on this necklace and I hope maybe some of you can comment or give your opinion on if they are faux, cultured, or natural. Thanks in advance!

 

[GemGeek]

Definitely artificial, but a cool necklace just the same!

 

[Pearl Dreams]

Yes, that grainy surface is typical of imitation pearls.

 

[KarinK]

And the edge around the hole on the first one. A trick is what we call The Tooth Test. You rub a pearl gently against your teeth or two pearls together. If they feel smooth they're fake. They should feel slightly gritty.

- Karin

 

[mystics_fan]

Thanks All for the wonderful Information!