Agate Chrysocolla Hematite Moissanite Pearl Tanzanite Brilliance Fluorescence
Alexandrite Chrysoprase Iolite Moonstone Pyrite Tigerís Eye Carat Hardness Inc
Amber Citrine Ivory Mother Pearl Quartz Topaz Clarity Stability
Amethyst Coral Jade Mystic Topaz Rubies Tourmaline Color Inclusion
Ametrine Diamond Jasper Obsidian Sapphire Turquoise Cut Toughness
Aquamarine Emerald Kunzite Onyx Spinel Yellow Topaz Durability
Blue Topaz Feldspar Malachite Opal Star Sapphire Zircon Facet
Cats Eye Garnet Marcasite Peridot Sugilite  

How and where is Quartz formed and found?

Quartz is one of the most common minerals found on the globe and usually regular quartz (not the gem quartz) is found in every region of the world.  Quartz is called silica dioxide and can be created from practically every type of rock.  Besides general or common Quartz, there is also gem quartz.  Gem Quartz is what gemstones are created from. There are many gemstones that are Quartz based.  Some of the more popular include Amethyst, Citrine, Jasper, Chert, Agate, Onyx and Sardonyx.

While Quartz is found almost everywhere, gem Quartz is usually found in a few specific places.  In or near pegmatite’s, in cavities that have volcanic rock and from hydrothermal veins (hot water heated by volcanic activity). However, since volcanoes are found or have been active in most regions of the world, gem Quartz is relatively easy to find and mine. 

Gem Quartz is usually noted for being the most affordable of the gemstone in larger carat weights.  Some gem Quartz’s tend to be found in large masses, however rarer gems such as Agate and Citrine, are not usually found in such large quantities.

It should be noted that synthetic Quartz is also produced.  Mainly produced for industrial purposes, specifically Quartz tuners, watches and industrial equipment, many times, synthetic gems are created.  One of the more popular gems created from synthetic quartz is Amethyst.  It should be noted that synthetic Amethyst has similar characteristics and behaves very closely to true Amethyst. Synthetic Amethyst will usually be stated at point of sale.

The colors, shapes and sizes that Quartz comes in

Quartz is one of the most common minerals on the planet.  While most Quartz is the common variety that has no worth, gem Quartz does occur in many regions around the world and the variety of their beauty, hues and sparkles are second to none.  Here is some information about the various colors, different shapes and the sizes that Quartz comes in.

Quartz comes in two main varieties, large crystal Quartz, sometimes referred to as coarse Quartz and very small, grainy Quartz which is referred to as cryptocrystalline.  Large crystal Quartz’s include Amethyst and Citrine.  These gem quartz’s are very beautiful come in a variety of colors such as pink, violet, bluish violet and for Citrine yellow or yellow brown.  Their crystal structure is usually translucent or transparent and they are usually bright and shine.

Cryptocrystalline or grainy Quartz’s include gem Quartz’s such as Agate, Onyx, Jasper and Sardonyx.  These types of Quartz’s come in many colors as well from black, to black and white for Onyx, to red and brownish red for Sardonyx.  Agate can come in many beautiful colors and usually has beautiful rings or bands.  Jasper is usually a yellowish brown.  They are usually opaque and look like stones, but are made from extremely small crystals that can’t be seen with the naked eye.

Quartz can come in huge masses and Amethyst can usually weight many kilograms when found in its natural state.  Agate and Onyx usually come in much smaller varieties.  The beauty about Quartz is that it is a great mineral to make ornamental jewelry out of.  Whether you would like to have a beautiful ring, earrings, brooch, bracelets, charms, etc, gem Quartz’s in both varieties are attractive and extremely popular.

© 2007 Gemstone Education