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2. Jewellery - Wikipedia

   en.wikipedia.org/wiki/Jewellery

   Among the well-known types of quartz are rose quartz (which has a delicate pink colour), and smoky quartz (which comes in a variety of shades of translucent brown). Some other gemstones, such as Amethyst and Citrine, are also part of the quartz family. Rutilated quartz is a popular type of quartz containing needle-like inclusions. Ruby

3. List of U.S. state minerals, rocks, stones and gemstones

   en.wikipedia.org/wiki/List_of_U.S._state...

   Rose quartz (1966) Fairburn agate (1966) and State Jewelry: Black Hills Gold: Tennessee [66] Agate (2009) Limestone (from 1979 to present) and formerly.

4. 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 ...

5. Concrete (perfumery) - Wikipedia

   en.wikipedia.org/wiki/Concrete_(perfumery)

   An image of a Damask rose. This aromatic species of rose is used for producing rose concrete to be made into a rose absolute. [3] Rose is one of the most popular natural flowers used in perfumery. A semi-solid residue of essential oils, waxes, resins and other oil-soluble plant chemicals remains. [2]

6. 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]

7. Labdanum - Wikipedia

   en.wikipedia.org/wiki/Labdanum

   Labdanum is produced today mainly for the perfume industry. The raw resin is usually extracted by boiling the leaves and twigs. An absolute is also obtained by solvent extraction. An essential oil is produced by steam distillation. The raw gum is a black or sometimes dark brown, fragrant mass containing up to 20% or more of water.