Mineral of the Month: Quartz
by Joshua Taylor
For September, the Mineral of the Month is the well-known mineral Quartz, a common mineral with many different varieties, formations, and colors. Its first uses laid the very foundation of tools in the stone age, as its hardness and reliability for day-to-day use. It has been used as early as the people of Mesopotamia 7000 BCE, and was used by the ancient Greeks, Egyptians, and Romans. The Greeks named the mineral “Krustallos” which is where the word “crystal" originated from, and the name Quartz originated from the German word “Quarz” which translates to “hard”, first used around 1530. Though the most common type of quartz takes on a clear glassy or whitish appearance, Quartz can take on many other colors such as purple, yellow, pink, gray, and more. While many varieties are common, others are still highly sought after by collectors due to these possible colors and the formations Quartz can take as it has formed.
Quartz is a silicate mineral with a chemical structure of SiO2, however, for the wide variations of the mineral different elements such as lithium, sodium, titanium, and more can change or alter the minerals appearance, that being color, texture, or transparency. For example, a well-known variant of Quartz is Amethyst which contains impurities of Iron (Fe3+) and/or had exposure to natural radiation. Quartz has a distinct hexagonal structure for its crystalline form. The mineral has a hardness of 7 on the Moh’s Scale, making it very durable to weathering and erosion. While having many varieties, Quartz also has the distinction of encapsulating other minerals such as Rutile, Tourmaline, Gold, and more.
While Quartz can take on many different colors, these tend to be given their own separate names or additions to the base mineral Quartz. Minerals such as Amethyst, mentioned before, Citrine, Agate, Prasiolite, Chalcedony, Herkimer Diamonds, Smokey Quartz, Rose Quartz, Jasper, and Tiger’s Eye are all varieties of Quartz that either contain impurities or have undergone a natural occurrence to change/alter the color or appearance of the mineral. Many of these listed minerals such as Amethyst, Chalcedony, or Jasper are all sought after for Jewelry as gemstones. While Quartz and its varieties can be found around the world, large crystals of Quartz can be found in select mines such as the Diamond Hill Mine in Abbeville, South Carolina or Wegner Crystal Mine in Mt. Ida, Arkansas.
While in Present Day Quartz isn’t used for tools like in ancient civilizations, Quartz is used in the manufacturing of electronics, especially electronics that utilize radio signals such as TVs, radios, or phones. It’s also used in creating glass and fiber-glass as quartz sand has a high purity in silica. Quartz is also a great material to make lenses out of, and is currently used in microscopes, lasers, and telescopes.
While Quartz isn’t on the top of a collectors list of desired specimens, Quartz has provided many other distinguishable pieces. It has not only provided a source of unique gemstones but has aided in technological advancement since the stone age.
References
Editors of Encyclopedia Britannica. (2025). “Quartz.” Britannica. https://www.britannica.com/science/quartz. (Accessed 8 August, 2025)
Variance. (2025). “Quartz History & Uses - From The Ancient World to Modern Technology.” Variance. https://varianceobjects.com/blogs/gemstone-history/quartz-history-uses-from-the-ancient-world-to-modern-technology. (Accessed 8 August, 2025)
GeologyIn. (n.d.). “What Causes the Color of Amethyst.” GeologyIn. https://www.geologyin.com/2018/05/what-causes-purple-color-of-amethyst.html. (Accessed 8 August, 2025)
by Joshua Taylor
For September, the Mineral of the Month is the well-known mineral Quartz, a common mineral with many different varieties, formations, and colors. Its first uses laid the very foundation of tools in the stone age, as its hardness and reliability for day-to-day use. It has been used as early as the people of Mesopotamia 7000 BCE, and was used by the ancient Greeks, Egyptians, and Romans. The Greeks named the mineral “Krustallos” which is where the word “crystal" originated from, and the name Quartz originated from the German word “Quarz” which translates to “hard”, first used around 1530. Though the most common type of quartz takes on a clear glassy or whitish appearance, Quartz can take on many other colors such as purple, yellow, pink, gray, and more. While many varieties are common, others are still highly sought after by collectors due to these possible colors and the formations Quartz can take as it has formed.
Quartz is a silicate mineral with a chemical structure of SiO2, however, for the wide variations of the mineral different elements such as lithium, sodium, titanium, and more can change or alter the minerals appearance, that being color, texture, or transparency. For example, a well-known variant of Quartz is Amethyst which contains impurities of Iron (Fe3+) and/or had exposure to natural radiation. Quartz has a distinct hexagonal structure for its crystalline form. The mineral has a hardness of 7 on the Moh’s Scale, making it very durable to weathering and erosion. While having many varieties, Quartz also has the distinction of encapsulating other minerals such as Rutile, Tourmaline, Gold, and more.
While Quartz can take on many different colors, these tend to be given their own separate names or additions to the base mineral Quartz. Minerals such as Amethyst, mentioned before, Citrine, Agate, Prasiolite, Chalcedony, Herkimer Diamonds, Smokey Quartz, Rose Quartz, Jasper, and Tiger’s Eye are all varieties of Quartz that either contain impurities or have undergone a natural occurrence to change/alter the color or appearance of the mineral. Many of these listed minerals such as Amethyst, Chalcedony, or Jasper are all sought after for Jewelry as gemstones. While Quartz and its varieties can be found around the world, large crystals of Quartz can be found in select mines such as the Diamond Hill Mine in Abbeville, South Carolina or Wegner Crystal Mine in Mt. Ida, Arkansas.
While in Present Day Quartz isn’t used for tools like in ancient civilizations, Quartz is used in the manufacturing of electronics, especially electronics that utilize radio signals such as TVs, radios, or phones. It’s also used in creating glass and fiber-glass as quartz sand has a high purity in silica. Quartz is also a great material to make lenses out of, and is currently used in microscopes, lasers, and telescopes.
While Quartz isn’t on the top of a collectors list of desired specimens, Quartz has provided many other distinguishable pieces. It has not only provided a source of unique gemstones but has aided in technological advancement since the stone age.
References
Editors of Encyclopedia Britannica. (2025). “Quartz.” Britannica. https://www.britannica.com/science/quartz. (Accessed 8 August, 2025)
Variance. (2025). “Quartz History & Uses - From The Ancient World to Modern Technology.” Variance. https://varianceobjects.com/blogs/gemstone-history/quartz-history-uses-from-the-ancient-world-to-modern-technology. (Accessed 8 August, 2025)
GeologyIn. (n.d.). “What Causes the Color of Amethyst.” GeologyIn. https://www.geologyin.com/2018/05/what-causes-purple-color-of-amethyst.html. (Accessed 8 August, 2025)
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Oxidized Quartz Crystal Cluster, Diamond Hill Mine, Abbeville, SC
Joshua Taylor specimen and photo |
Oxidized Quartz Crystal Cluster, Diamond Hill Mine, Abbeville, SC
Joshua Taylor specimen and photo |
1- Oxidized Quartz Crystal
2- Milky Quartz Crystal 3- Quartz Crystal 4- Smokey Quartz Crystal Diamond Hill Mine, Abbeville, SC Joshua Taylor specimen and photo |