Too Tiny?

[Sajen]

Originally Posted by Indianajones

Difficult to give directions/advise on this matter; can only say tridacna is like marblestone and bone would be alike very hard ebonywood (to give material comparisson).
Howabout this; tap the handle on glas n when it says 'TOK TOK' it is tridacna n when it does 'POK POK' its bone . . . . .
(not much of advise is it . .?!?!?)

Hi Wouter,
I think the cold feel in hand is a certain indication, isn't it?