identification please

[dave r]

Definately not S.E.Asian, the only species from there this sort of size would be something like gigantea or kamschatkana which they are not. If they are from S. Victoria they can only be rubra. I have bleached many shells and have never known it to affect the colour, which bleach do you use? I would be very interested to know what effects the bleach had on your shells.
vman, they do not need bleaching anyway. The deposits can be removed with something like a dental pick for the stubborn bits and a wire brush for the rest but don't be too rough! Sorry, I did not notice the bit about cleaning before!