Quartz – The Master!
Types and habits.
I’m no expert on this subject but I do want to write about Quartz for a couple of reasons. I spend a lot of time talking about all the different types of quartz and their different habits (external shape) and formations. Another reason is that it’s my number one, all-time favourite crystal. It truly is the Master.
Types of Quartz
Quartz is a name given to well crystallized and compact forms of silica. Quartz is silicon dioxide. It has a hardness of 7, so it is extremely tough and durable. It belongs to the Trigonal crystal system and is one of the most abundant minerals on earth.
There is Macrocrystalline Quartz and Microcrystalline Quartz. Macro is large and Micro is small.
Macrocrystalline varieties of Quartz show small to large visible crystals or are made up of large intergrown crystals. Examples are Quartz/Rock crystal, Amethyst, Smoky Quartz, Citrine, Rose Quartz, Ametrine, Tigers Eye and Aventurine to name just a few.
Microcrystalline varieties of Quartz are made up of minute crystal grains that are visible under a microscope. Examples are Carnelian, Agate, Chalcedony and Jasper to name just a few.