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2. Quartz - Wikipedia

   en.wikipedia.org/wiki/Quartz

   Quartz is, therefore, classified structurally as a framework silicate mineral and compositionally as an oxide mineral. Quartz is the second most abundant mineral in Earth's continental crust, behind feldspar. [10] Quartz exists in two forms, the normal α-quartz and the high-temperature β-quartz, both of which are chiral. The transformation ...

3. 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]

4. Asterism (gemology) - Wikipedia

   en.wikipedia.org/wiki/Asterism_(gemology)

   Asterism on the surface of a blue star sapphire. A purple-pink star sapphire displaying asterism in a platinum ring.. An asterism (from Ancient Greek ἀστήρ (astḗr) 'star' and -ism) is a star-shaped concentration of light reflected or refracted from a gemstone.

5. 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.

6. Gemstones in the Bible - Wikipedia

   en.wikipedia.org/wiki/Gemstones_in_the_Bible

   The amethyst is a brilliant transparent stone of a purple colour and varies in shade from violet purple to rose. There are two kinds of amethysts: the oriental amethyst, a species of sapphire that is very hard (cf. Heb.,hlm), and when colourless is almost indistinguishable from the diamond. The occidental amethyst is of the silex family and is ...

7. 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]

8. Luminous gemstones - Wikipedia

   en.wikipedia.org/wiki/Luminous_gemstones

   Thermoluminescence from heating chlorophane specimens on a hotplate. Triboluminescence from rubbing together two quartz crystals.. First, it will be useful to introduce some mineralogical terminology for gemstones that can glow when exposed to light, friction, or heat.

9. Rose Quartz (disambiguation) - Wikipedia

   en.wikipedia.org/wiki/Rose_Quartz_(disambiguation)

   Rose quartz is a type of quartz which exhibits a pale pink to rose red hue. Rose Quartz may also refer to: Rose quartz (color), a gray shade of magenta; Rose Quartz (Fabergé egg) Rose Quartz (My Little Pony), one of the Crystal Ponies from the My Little Pony franchise "Rose Quartz", a song by Toro y Moi from their album Anything in Return