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2. Tourmaline - Wikipedia

   en.wikipedia.org/wiki/Tourmaline

   Crystals may be green at one end and pink at the other, or green on the outside and pink inside; this type is called watermelon tourmaline and is prized in jewelry. An excellent example of watermelon tourmaline jewelry is a brooch piece (1969, gold, watermelon tourmaline, diamonds) by Andrew Grima (British, b.

3. Elbaite - Wikipedia

   en.wikipedia.org/wiki/Elbaite

   As a gemstone, elbaite is a desirable member of the tourmaline group because of the variety and depth of its colours and quality of the crystals. Originally discovered on the island of Elba , Italy in 1913, it has since been found in many parts of the world.

4. Chalcedony - Wikipedia

   en.wikipedia.org/wiki/Chalcedony

   Chalcedony (/ k æ l ˈ s ɛ d ə n i / kal-SED-ə-nee or / ˈ k æ l s ə ˌ d oʊ n i / KAL-sə-doh-nee) [2] is a cryptocrystalline form of silica, composed of very fine intergrowths of quartz and moganite. [3]

5. File:Watermelon Tourmaline.JPG - Wikipedia

   en.wikipedia.org/wiki/File:Watermelon_Tourmaline.JPG

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6. Watermelon Man (composition) - Wikipedia

   en.wikipedia.org/wiki/Watermelon_Man_(composition)

   "Watermelon Man" is a jazz standard written by Herbie Hancock for his debut album, Takin' Off (1962). Hancock's first version was recorded in a hard bop style, featuring solos by trumpeter Freddie Hubbard and saxophonist Dexter Gordon . [ 1 ]

7. Optical rectification - Wikipedia

   en.wikipedia.org/wiki/Optical_rectification

   The red arrow indicates optical rectification: The oscillating electric field causes a shift of the ions' average positions, which in turn changes the crystal's DC polarization. Electro-optic rectification (EOR), also referred to as optical rectification , is a non-linear optical process that consists of the generation of a quasi-DC ...

8. Wikipedia:Vital articles/List of all articles - Wikipedia

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

   (2,874) T Tauri star · T cell · T-Series (company) · T-shirt · T-square · T-top · T. Allston Brown · T. Berry Brazelton · T. Boone Pickens · T. E. Hulme · T. E. Lawrence · T. H. Green · T. H. White · T. Nelson Downs · T. S. Eliot · T.A.T.u. · TGV · TIFF · TLC (group) · TNT · TNT equivalent · TRAPPIST-1 · TRS-80 · TSMC · TU Dresden · TV Guide · TVXQ · TW Hydrae · Ta ...