P023-Golden cowrie shell with non-nacreous natural pearl (Cypraea aurantium, Gmelin 1791)
P023-Golden cowrie shell with non-nac...
P022-Flame pattern in a non-nacreous natural pearl from an unknown mollusc.
P022-Flame pattern in a non-nacreous ...
P021-Flame pattern in a non-nacreous natural pearl from Tridacna sp.
P021-Flame pattern in a non-nacreous ...
P020-Flame pattern in a non-nacreous natural pearl from Tridacna sp.
P020-Flame pattern in a non-nacreous ...
P019-Flame pattern in a non-nacreous natural pearl from Cassis sp.
P019-Flame pattern in a non-nacreous ...
P018-Flame pattern in a non-nacreous natural pearl from Strombus gigas (Linaeus 1758) (Conch pearl).
P018-Flame pattern in a non-nacreous ...
P013-Radiography of a Nautilus shell with a natural blister pearl, enclosing an acorn banacle (crustacean).
P013-Radiography of a Nautilus shell ...
P017-Flame pattern in a non-nacreous natural pearl from Tridacna sp.
P017-Flame pattern in a non-nacreous ...
P016-Flame pattern in a non-nacreous natural pearl from Cassis sp.
P016-Flame pattern in a non-nacreous ...
P015-Mercedes star pattern in a non-nacreous natural pearl from Pecten sp. (Scallop).
P015-Mercedes star pattern in a non-n...
P011-Checkerboard pattern in a non-nacreous natural pearl from Pecten sp. (Scallop)
P011-Checkerboard pattern in a non-na...
P009-Flame pattern in a non-nacreous natural pearl from Melo melo.
P009-Flame pattern in a non-nacreous ...
P007-Checkerboard pattern in a non-nacreous natural pearl from Pecten sp. (Scallop).
P007-Checkerboard pattern in a non-na...
P004-Flame pattern in a non-nacreous natural pearl from Melo melo
P004-Flame pattern in a non-nacreous ...
P002-Flame pattern in a non-nacreous natural pearl from an unknown mollusc
P002-Flame pattern in a non-nacreous ...
P010-Porphyrin-related red luminescence in a bi-colored nacreousnon-nacreous natural pearl from Pteria penguin
P010-Porphyrin-related red luminescen...
P003-Flame pattern in a non-nacreous natural pearl from an unknown mollusc
P003-Flame pattern in a non-nacreous ...
P006-Flame pattern in a non-nacreous natural pearl from Tridacna sp.
P006-Flame pattern in a non-nacreous ...
P005-Flame pattern in a non-nacreous natural pearl from Strombus gigas (Linaeus 1758)
P005-Flame pattern in a non-nacreous ...
P008-Flame pattern in a non-nacreous natural pearl from Strombus gigas (Linaeus 1758) (Conch pearl)
P008-Flame pattern in a non-nacreous ...
P001-Flame pattern in a non-nacreous natural pearl  of 50.4 ct from Melo melo
P001-Flame pattern in a non-nacreous ...
P026-Spectacular purple flame in a non-nacreous natural pearl from an unknown mollusc
P026-Spectacular purple flame in a no...
P025-Spectacular purple non-nacreous natural pearl from an unknown mollusc
P025-Spectacular purple non-nacreous ...
P024-Flame pattern with spectacular eye in a non-nacreous natural pearl from Tridacna sp.
P024-Flame pattern with spectacular e...
P012-Checkerboard pattern in a non-nacreous natural pearl from Pecten sp. (Scallop)
P012-Checkerboard pattern in a non-na...