Black pearl necklace hallmark id

[sweetmisty2007]

Hello,
I have this 18 inches long, 7-8mm black pearl necklace.
I would like to know if anyone recognizes this diamond shape hallmark, on th clasp.
Looks like an initial M in the diamond.
Thanks

 

[Pearl Dreams]

The pearls are dyed freshwater pearls from China and the clasp is generic; that is, it does not indicate the brand of pearls.

 

[CortezPearls]

I agree fully!