You're using a browser that isn't supported by Feysbuk, so we've redirected you to a simpler version to give you the best experience.Gezegenin çekirde?inde meydana mevrut çembersel temiz?mdan kaynaklan?r. Belirli kristaller, kuartzlar ve ayr?ca ?eker de d?? tahakkümya maruz kald???nda, yüzleri aras?nda nüans olu?turur. Piezoelektrik, 1880 y?l?