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  2. Turquoise - Wikipedia

    en.wikipedia.org/wiki/Turquoise

    Turquoise is an opaque, ... odontolite was once mined in large quantities—specifically for its use as a substitute for turquoise—in southern France.

  3. Egyptian faience - Wikipedia

    en.wikipedia.org/wiki/Egyptian_faience

    The association of faience with turquoise and lapis lazuli becomes even more conspicuous in Quennou's funerary papyrus, giving his title as the director of overseer of faience-making, using the word which strictly means lapis lazuli, which by the New Kingdom had also come to refer to the 'substitute', faience. [7]

  4. Blue pigments - Wikipedia

    en.wikipedia.org/wiki/Blue_pigments

    Maya blue is a synthetic turquoise-blue pigment made by infusing indigo dyes ... Azurite was often used in the Renaissance and later as a less expensive substitute ...

  5. Egyptian blue - Wikipedia

    en.wikipedia.org/wiki/Egyptian_blue

    Pyxis made out of "Egyptian blue" faience: Imported to Italy from northern Syria, it was produced 750–700 BC.(Shown at Altes Museum in Berlin). Egyptian blue is a synthetic blue pigment produced from a mixture of silica, lime, copper, and an alkali.

  6. Howlite - Wikipedia

    en.wikipedia.org/wiki/Howlite

    Howlite is commonly used to make decorative objects such as small carvings or jewelry components. Because of its porous texture, howlite can be easily dyed to imitate other minerals, especially turquoise because of the superficial similarity of the veining patterns. Howlite is also sold in its natural state, sometimes under the trade names of ...

  7. These 18 Beautiful Places in Canada Deserve a Spot on Your ...

    www.aol.com/lifestyle/18-beautiful-places-canada...

    From turquoise lakes to luxe ski resorts, ... Though we’d never suggest a substitute for the magic that is France, if you can’t make it across the Atlantic, Quebec City is a close second to ...

  8. Vitamin D not recommended for preventing fractures in older ...

    www.aol.com/vitamin-d-not-recommended-preventing...

    The U.S. Preventive Services Task Force released a draft recommendation advising against using vitamin D to prevent falls and fractures in people over 60. Pharmacist Katy Dubinsky weighs in.

  9. Chrysocolla - Wikipedia

    en.wikipedia.org/wiki/Chrysocolla

    Generally, dark navy blue chrysocolla is too soft to be used in jewelry, while cyan, green, and blue-green chrysocolla can have a hardness approaching 6, similar to turquoise. Chrysocolla chalcedony is a heavily silicified form of chrysocolla that forms in quartz deposits and can be very hard and approach a hardness of 7. [9] [10] [11]