Presentation :
Names) :
Amethyst (variety of quartz).
Etymology:
Amethyst: From the Greek amethustos = which protects against drunkenness.
Group, Family:
Quartz (Cryst...
Presentation :
Names) :
Hilulitis.
Group, Family:
Silicate quartz.
Quartz silicate with inclusions of zircon, goethite and garnet which crystallize in massive formations.
...
Presentation :
Names) :
Hilulite.
Group, Family:
Silicate quartz.
Quartz silicate with inclusions of zircon, goethite and garnet which crystallize in massive formations.
...
Presentation :
Names) :
Hilulite.
Group, Family:
Silicate quartz.
Quartz silicate with inclusions of zircon, goethite and garnet which crystallize in massive formations.
...
Presentation :
Often confused with jade despite its much lower hardness 2.5 to 4 for Serpentine compared to 6.5 to 7 for Jade and Jadeite.
Names) :
Serpentine => Ant...
Presentation :
Often confused with jade despite its much lower hardness 2.5 to 4 for Serpentine compared to 6.5 to 7 for Jade and Jadeite.
Names) :
Serpentine => An...
