help with shells!

[briana5125]

hello all...

basically i came across this collection of shells and would appreciate some help.

i am looking to find out if these are real shells or fake shells? and how would i be able to tell the difference.

and also i would like to check that there is no real valuable shells in my collection before i give them to a freind of mine who decorates his house with anything sea related because he could get bored with them in the future and give or throw them away and that would be out of my control.

thanks