pierrettedE said:
hi,
Looks like a Dog Conch shell..
Strombus Canarium?
Perhaps a library of Strombidae pictures will help identifying the shell, for what that matters.
Here's such a list. Would have liked more an academic catalog, but none turned out quickly.
Eddie Hardy has an even larger catalog of Strombidae!
HERE
The traditional pink conch pearls - like those in the picture from PearlsParadise - are supposed to come from Strombus Gigas ('Queen Coch').
From the looks of it, 'Melo' pearls could be coming from a few other
Volutidae shells. The Bailer Shell (Melo Melo) is nominated by Mr. Larson
HERE.
The commercial recognition of the 'conch' name and general confusion over what comes from where and what shell blurrs the lines a bit. Wouldn't bet that the white or yellowish 'conch' pearls I've been shown really do come from the same Strombus Gigas. Not that anyone seemed to care - the washed out colors were discounted and the intense pinks and orange prized just the same.
If I understand these things right, the color and size are still more important than anything. The species identification comes to be the cherry on the pearl collector's cake!
The picture looks like a Bailer Shell... with the lip rolled towards the axis rather than outward as the S. Canarium has it. The tip is not shown... And I am not an expert in any of these. Just wanted to add together all bits and pieces of Strombus pearl identification I know for clarification, feedback... etc. I'll try to get a biologists's view on these one of these days (a colleague, now out of office).