Goyaba is a recent variety of quartz with inclusions with uniform colors
varying from red to orange, yellow and salmon pink. Some rough has been
eated, but most has natural colors. The gems owes its vibrant colour probably
to microscopic Amphibole, Horneblende or Actinolite needle inclusions which
saturate the stone.
Goyaba is a colored fruit common in Brazil. It has been used other
spelling for the same name: Gyoba, Guava or Goiaba, depending on the language
used for the fruit.
It comes from Minas Gerais, Brazil.