Presentation :
Names) :
Pyrite.
Etymology:
From the Greek pure=fire.
Group, Family:
Pyrite Group.
Color :
Brass yellow to metallic dark yellow "Grey-...
Presentation :
Names) :
Hawk's eye (quartz variety).
Etymology:
According to the characteristic color and appearance.
Group, Family:
Quartz family (Microcrystalline/Cry...
Presentation:
Names) :
Bull's eye (variety of quartz).
Etymology:
Based on color and appearance.
Group, Family:
Quartz family (Microcrystalline/Cryptocrystalline).
...
Crystalline and cryptocrystalline varieties of quartz
Quartz presents numerous crystalline varieties due to the presence of other elements during its formation, which notably change its hue o...
