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potch

Line breaks: potch
Pronunciation: /pɒtʃ
 
/
(also potch opal)

Definition of potch in English:

noun

[mass noun]
Opal which has no play of colour and is of no value.
Example sentences
  • One potential use of common or potch opal is for the production of cristobalite for use as a dental and jewellery investment.
  • It often serves as an excellent dark backing for black opals which normally have a thin segment of precious opal naturally formed on a potch backing.
  • They usually consist of a very thin opal slice sandwiched between a glass or quartz top and a potch, basanite, jade, or black onyx bottom.

Origin

late 19th century: of unknown origin.

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