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2. Desert rose (crystal) - Wikipedia

   en.wikipedia.org/wiki/Desert_rose_(crystal)

   A desert rose is an intricate rose -like formation of crystal clusters of gypsum or baryte, which include abundant sand grains. [1] The "petals" are crystals flattened on the c axis, fanning open in radiating clusters. The rosette crystal habit tends to occur when the crystals form in arid sandy conditions, [1] such as the evaporation of a ...

3. Counterfeit watch - Wikipedia

   en.wikipedia.org/wiki/Counterfeit_watch

   Previously, replica watches could be distinguished by "sloppy printing, soft metal and cheap quartz movements that made the second hand clunk its way round the dial" while recent "fakes feel substantial, keep decent time and have the patina of high quality. Some are so convincing that the only way to tell they're fake is to take the back off". [11]

4. Roselite - Wikipedia

   en.wikipedia.org/wiki/Roselite

   Roselite. Roselite is a rare arsenate mineral with chemical formula: Ca2(Co,Mg) [AsO4]2·H2O. It was first described in 1825 for an occurrence in the Rappold mines of Schneeberg, Saxony, Germany and named by Armand Lévy after German mineralogist Gustav Rose. [2] It occurs in cobalt -bearing hydrothermal environments and was associated with ...

5. Rose quartz - Wikipedia

   en.wikipedia.org/?title=Rose_quartz&redirect=no

   From a merge: This is a redirect from a page that was merged into another page.This redirect was kept in order to preserve the edit history of this page after its content was merged into the content of the target page.

6. Quartz - Wikipedia

   en.wikipedia.org/wiki/Quartz

   Quartz. Quartz is a hard, crystalline mineral composed of silica (silicon dioxide). The atoms are linked in a continuous framework of SiO 4 silicon–oxygen tetrahedra, with each oxygen being shared between two tetrahedra, giving an overall chemical formula of SiO 2. Quartz is, therefore, classified structurally as a framework silicate mineral ...

7. Aventurine - Wikipedia

   en.wikipedia.org/wiki/Aventurine

   Aventurine. Aventurine is used for a number of applications, including landscape stone, building stone, aquaria, monuments, and jewelry. Aventurine is a form of quartzite, characterised by its translucency and the presence of platy mineral inclusions that give it a shimmering or glistening effect termed aventurescence.