Fridrichová, Jana; Bačík, Peter; Illášová, Ľudmila; Kozáková, Petra; Škoda, Radek; Pulišová, Zuzana; Fiala, Anton (July 2016). "Raman and optical spectroscopic investigation of gem-quality smoky quartz crystals". Vibrational Spectroscopy. 85: 71–78. doi: 10.1016/j.vibspec.2016.03.028.

Not all varieties of quartz are naturally occurring. Some clear quartz crystals can be treated using heat or gamma-irradiation to induce color where it would not otherwise have occurred naturally. Susceptibility to such treatments depends on the location from which the quartz was mined. [69] Of course, Blue Quartz is also a great tool for meditation. You can often see it at spas and salons that specialize in crystal healing. Blue Quartz is a unique healing crystal as far as meaning goes. Its place in the healing world connects to the core mineral and its color. Even in the most chaotic environments, this stone’s healing properties and energy can create a sense of ease in its holder. It’s an instant auric rejuvenator, replacing feelings of anxiety and worry with a wave of peace.

Silicon is the second most abundant chemical element in the earth’s crust after oxygen. The two elements combine to create silicates for example, feldspars, amphiboles and pyroxene, to name the larger groups, as well as silicon oxide (SiO2), also known as quartz. Quartz is found on every continent. Read more: Exploring the Varieties of Quartz Varieties specific to Amethyst, Citrine, Smoky Quartz, Rose Quartz, Rutilated Quartz, and Chalcedony are listed separately. There are many different varieties of quartz, several of which are classified as gemstones. Since antiquity, varieties of quartz have been the most commonly used minerals in the making of jewelry and hardstone carvings, especially in Eurasia.

Saigusa, Y. (2017). "Chapter 5 – Quartz-Based Piezoelectric Materials". In Uchino, Kenji (ed.). Advanced Piezoelectric Materials. Woodhead Publishing in Materials (2nded.). Woodhead Publishing. pp.197–233. doi: 10.1016/B978-0-08-102135-4.00005-9. ISBN 9780081021354. Meanwhile, Pisces are more likely to internalize their emotions. While they seem calm on the outside, there’s always a battle brewing underneath. Kostov, R. I. 1992. Amethyst. A Geological-Mineralogical and Gemmological Essay. Union of Scientists in Bulgaria, Sofia, 249 p. (in Bulgarian with English abstract)Additionally, there is a rare type of pink quartz (also frequently called crystalline rose quartz) with color that is thought to be caused by trace amounts of phosphate or aluminium. The color in crystals is apparently photosensitive and subject to fading. The first crystals were found in a pegmatite found near Rumford, Maine, US and in Minas Gerais, Brazil. [63] The crystals found are more transparent and euhedral, due to the impurities of phosphate and aluminium that formed crystalline rose quartz, unlike the iron and microscopic dumortierite fibers that formed rose quartz. [64] Smoky quartz [ edit ]

Blue Quartz is all about personal development and growth. That doesn’t just apply to your job or education. It also applies to your spiritual health. Easily diagnosed from the very strong pleochrosim with the secondary colour being the orange-yellow. A pleasing inclusion to find. Quartz Inclusions: Pyrite The choice is yours. Blue Quartz is versatile enough to serve you well no matter how you choose to welcome it into your life. Zodiac Connection

A large geode, or "amethyst-grotto", from near Santa Cruz in southern Brazil was presented at a 1902 exhibition in Düsseldorf, Germany. [1] Prasiolite, or Green Quartz, describes a light green Quartz artificially colored by heat treatment of certain types of Amethyst. May also be called "Green Amethyst" by some jewelers. Anthony, John W.; Bideaux, Richard A.; Bladh, Kenneth W.; Nichols, Monte C. (eds.). "Quartz" (PDF). Handbook of Mineralogy. Vol.III (Halides, Hydroxides, Oxides). Chantilly, VA: Mineralogical Society of America. ISBN 0962209724. Archived (PDF) from the original on 1 April 2010 . Retrieved 21 October 2009.