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to measure wood chatoyance is unanimously accepted by the scientific community. Some methods have been proposed, such as one named PZC after the names of its inventors, Pisani, Zanetta and Codoro. This measure has been used to measure typical values for a number of wood species; some results are reported below:

See also

* Gemology
*
*

References

;General
* Webster, R., Jobbins, E. A. (Ed.). (1998). Gemmologist's compendium. St Edmundsbury Press Ltd, Bury St

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