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2. Turquoise - Wikipedia

   en.wikipedia.org/wiki/Turquoise

   Turquoise. Turquoise is an opaque, blue-to-green mineral that is a hydrous phosphate of copper and aluminium, with the chemical formula Cu Al 6( PO 4)4( OH)8·4 H 2 O. It is rare and valuable in finer grades and has been prized as a gemstone for millennia due to its hue.

3. Firoozeh Koobi - Wikipedia

   en.wikipedia.org/wiki/Firoozeh_Koobi

   Firoozeh Koobi (Persian: فیروزه کوبی; Firouze Koobi, or Firuzehkubi) is an Iranian handicraft made of a copper vessel that is covered with inlayed turquoise stone. [1] It is one of the most popular souvenirs of Isfahan. [2] Although the technique has a short history (less than 100 years), due to the use of precious stones and the ...

4. Jewellery - Wikipedia

   en.wikipedia.org/wiki/Jewellery

   Some turquoise contains a matrix of dark brown markings, which provides an interesting contrast to the gemstone's bright blue colour. Some gemstones (like pearls, coral, and amber) are classified as organic, meaning that they are produced by living organisms. Others are inorganic, meaning that they are generally composed of and arise from minerals.

5. How to Identify Vintage Costume Jewelry and Make Money ... - AOL

   www.aol.com/finance/identify-vintage-costume...

   5. Build Relationships With Sellers and Buyers. Both Ward and Webb have relationships with customers and dealers to get the best pieces out to the right people. Ward texts back and forth with ...

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

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

   Leaders of states in the U.S. which have significant mineral deposits often create a state mineral, rock, stone or gemstone to promote interest in their natural resources, history, tourism, etc. Not every state has an official state mineral, rock, stone and/or gemstone, however.

7. Magnesite - Wikipedia

   en.wikipedia.org/wiki/Magnesite

   Magnesite can be cut, drilled, and polished to form beads that are used in jewelry-making. Magnesite beads can be dyed into a broad spectrum of bold colors, including a light blue color that mimics the appearance of turquoise. The Japanese-American artist Isamu Noguchi used magnesite as a sculptural material for some of his artworks.