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2. Rutilated quartz - Wikipedia

   en.wikipedia.org/wiki/Rutilated_quartz

   Rutilated quartz used as a gemstone. Rutilated quartz is a variety of quartz which contains acicular (needle-like) inclusions of rutile. [1] It is used for gemstones. These inclusions mostly look golden, but they also can appear silver, copper red or black.

3. Wikipedia : WikiProject Gemology and Jewelry/Gemstones

   en.wikipedia.org/wiki/Wikipedia:WikiProject...

   This page is a subtopic of Wikipedia:WikiProject Gemology and Jewelry, and is designed to enable the expansion and improvement of Gemology and Jewelry related articles. Gemology and Jewelry Wikipedians

4. Vasily Konovalenko - Wikipedia

   en.wikipedia.org/wiki/Vasily_Konovalenko

   Materials: Beloretsk quartz, rutilated quartz, cacholong or Kalmuck agate, amethyst, turquoise, malachite, red- and black-banded jasper, gold and gold-plated silver. Height 34 cm. [ 1 ] : 102 The 1988 exhibition in Colorado Springs, Colorado

5. 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

6. Rutile - Wikipedia

   en.wikipedia.org/wiki/Rutile

   Rutile in quartz. Within the igneous environment, rutile is a common accessory mineral in plutonic igneous rocks, though it is also found occasionally in extrusive igneous rocks, particularly those such as kimberlites and lamproites that have deep mantle sources.

7. Smoky quartz - Wikipedia

   en.wikipedia.org/wiki/Smoky_quartz

   Smoky quartz is a brownish grey, translucent variety of quartz that ranges in clarity from almost complete transparency to an almost-opaque brownish-gray or black crystals. [6] The color of smoky quartz is produced when natural radiation, emitted from the surrounding rock, activates color centers around aluminum impurities within the ...