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synthetic opals
opal simulant


Many attempts have been made to produce synthetic opal and opal simulants.

These categories are defined here as:

Synthetic Opal

a man-made opal which has the same chemical composition, physical structure and properties of natural opal.

Opal Simulant

a man made material which attempts to duplicate the appearance of opal, but may be made from materials other than silica, and has different physical structures and/or properties to the natural stone.