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).
...
