CANDY STRIP OPAL ROUGH

This is a  natural untreated rough sliced  opal specimen from Utah USA. They are also known as bacon opal due to its intersting strips of assorted colours-this is quite a collectors item.It takes a good polish.We have some polished pendants in this store.

Hydrated Silicon Dioxide (SiO₂·nH₂O)

Weight 41.50 cts app

Size   35 x 21 x 10 mm app

The quality varies quite a bit. Most is in layers of honey brown and
cream (hence bacon) but other  hues occur including purple and red.
Almost none of it shows the mixed flash of precious opal, but it is an
interesting material nonetheless.