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<p>[QUOTE=&quot;Dawnno, post: 631729, member: 10171&quot;]I&#039;m stuck on &quot;seashell&quot;... those chipped edges are b/c calcium in seashells is much more of a brittle structure than in bone.&nbsp; Bone is a &quot;hydoxyapatite&quot; [god, I haven&#039;t used that word since college].&nbsp;&nbsp; And it seems that, besides the really &#039;groovy&#039; bead, and I don&#039;t mean that as a surfer dude, they seem to have a slight depression or concave surface to them, more shell like.&nbsp; Maybe both?&nbsp; Got mixed together when the surf shop dropped them?[/QUOTE]</p><p><br /></p>

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