Green aventurine has a shimmering iridescence and a semitranslucent appearance. Aventurine is a metamorphic rock, meaning it is made up of more than one mineral. Green aventurine is mostly quartz with the glistening effect coming from tiny inclusions of shiny mica minerals. Colors may vary.
Cabochons>Grade B>AventurineCabochonsGrade BAventurineGreens18x13mmOval13mmhttp://www.firemountaingems.com/itemdetails/h201196cbH201196CBCabochon, green aventurine (natural), light to medium, 18x13mm calibrated oval, B grade, Mohs hardness 7. Sold per pkg of 4.//image1.fmgstatic.com/images/p1196cbb.jpg5.625.62As Low As $0.58 per cabochon