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2. Quartz - Wikipedia

   en.wikipedia.org/wiki/Quartz

   Quartz crystal demonstrating transparency. Pure quartz, traditionally called rock crystal or clear quartz, is colorless and transparent or translucent and has often been used for hardstone carvings, such as the Lothair Crystal. Common colored varieties include citrine, rose quartz, amethyst, smoky quartz, milky quartz, and others. [33]

3. Gemstone - Wikipedia

   en.wikipedia.org/wiki/Gemstone

   Gemstone. Group of precious and semiprecious stones—both uncut and faceted—including (clockwise from top left) diamond, uncut synthetic sapphire, ruby, uncut emerald, and amethyst crystal cluster. A gemstone (also called a fine gem, jewel, precious stone, semiprecious stone, or simply gem) is a piece of mineral crystal which, when cut or ...

4. List of gemstones by species - Wikipedia

   en.wikipedia.org/wiki/List_of_gemstones_by_species

   Rose quartz (var.) Rock crystal (var.) Shocked quartz (var.) Smoky quartz (var.) Quartzite; ... Metal-coated crystals hyped as rainbow quartz; Lab spinel; Synthetic ...

5. The Best Birthstone Jewelry for Your Birthday Month - AOL

   www.aol.com/best-birthstone-jewelry-birthday...

   Rose quartz is known as the stone of unconditional love, encouraging self-acceptance, peace, and nurturing relationships," says Leach. Adds Mehdi, "Opals come in various colors and types, such as ...

6. Heliotrope (mineral) - Wikipedia

   en.wikipedia.org/wiki/Heliotrope_(mineral)

   Heliotrope (mineral) The mineral aggregate heliotrope (from Ancient Greek ἥλιος (hḗlios) 'sun' and τρέπειν (trépein) 'to turn'), also called Indian bloodstone or ematille, is a cryptocrystalline mixture of quartz that occurs mostly as jasper (opaque) or sometimes as chalcedony (translucent). The "classic" bloodstone is ...

7. 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 ...