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2. Crystal healing - Wikipedia

   en.wikipedia.org/wiki/Crystal_healing

   An example of this is rose quartz. In Egypt, it was believed rose quartz could prevent aging, but the Romans used rose quartz as a seal to signify ownership, while in the Middle Ages it was used in healing potions, today rose quartz is known as the "love stone" and is used to balance emotions, and heal anger and disappointment. [16]

3. Quartz - Wikipedia

   en.wikipedia.org/wiki/Quartz

   An early use of the piezoelectricity of quartz crystals was in phonograph pickups. One of the most common piezoelectric uses of quartz today is as a crystal oscillator. The quartz oscillator or resonator was first developed by Walter Guyton Cady in 1921. [86] [87] George Washington Pierce designed and patented quartz crystal oscillators in 1923.

4. Spatika Lingam - Wikipedia

   en.wikipedia.org/wiki/Spatika_Lingam

   High quality quartz crystals are single-crystal silica with optical or electronic properties that make them suitable for hardstone carvings. The Hindu temples in South India use this semi-precious mineral for making Shiva Lingams. Sphatikam beads are made from translucent rose quartz are cut and polished as beads.

5. Gemstone - Wikipedia

   en.wikipedia.org/wiki/Gemstone

   Types of synthetic quartz include citrine, rose quartz, and amethyst. Natural occurring quartz is not rare, but is nevertheless synthetically produced as it has practical application outside of aesthetic purposes. Quartz generates an electric current when under pressure and is used in watches, clocks, and oscillators. [62]

6. Rhodochrosite - Wikipedia

   en.wikipedia.org/wiki/Rhodochrosite

   Rhodochrosite is mainly used as an ore of manganese, which is a key component of low-cost stainless steel formulations and certain aluminium alloys. [9] Quality banded specimens are often used for decorative stones and jewellery.

7. List of gemstones by species - Wikipedia

   en.wikipedia.org/wiki/List_of_gemstones_by_species

   There are over 300 types of minerals that have been used as gemstones. Such as: A–B. Actinolite. ... Rose quartz (var.) Rock crystal (var.) Shocked quartz (var ...