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Pleochroism is an optical phenomenon in which a substance appears to be different colors ... Anisotropic crystals have double refraction of light where light of different polarizations is bent diffe...

Crystals Colour and Light


How do crystals get their color? The presence of different chemicals causes the variety of colors to different gemstones. Many gems are simply quartz crystals ...

Crystal Colors Explained | Crystal Vaults


Colors have many meanings to people mostly based on their culture and religion. But the natural crystals and minerals have no culture and no religion. They are ...

Color: Mineral Properties - The Mineral and Gemstone Kingdom


Information on the mineral property Color. ... which have slight additions of color- causing elements in some specimens that cause it to be a different color. ... Together with color, a crystal shape can identify most of the better known minerals.

Colorless Gemstones | Causes of Color - Webexhibits


Transition metals can transform even the plainest crystal into a coveted treasure. ... The role of impurities in causing color is different here (see semiconductors).

Learn About Crystals - Home Science Tools


Sugar crystals and rock crystals are made up of different chemical elements, too. ... elements the crystal is made out of will make it a unique shape and color.

A crystal of a different color: One chemical forms two colors of ...


Aug 4, 2013 ... Chemists have unexpectedly made two differently colored crystals -- one orange, one blue -- from one chemical in the same flask while ...

The meanings of Colors - Crystal Cure


Color symbolism, color and personality, gemstone color & meaning. Color can influence our emotions, our actions and how we respond to various people, things ...

Crystals and Gemstones - Crystalinks


Note: Some of the crystals discussed below come in different colors. Crystals can be found raw in nature or cut and polished. They affect each person based on ...

Smithsonian Education - Minerals, Crystals and Gems


When many different crystals grow near each other, they mesh together to form a conglomerated ... Light interacts with different atoms to create different colors.

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Why do crystals, like quartz and diamonds, form in different colors?


Apr 18, 2014 ... Some crystals, like quartz and diamonds, form in a variety of different colors. For example, quartz can be clear, 'foggy', pink, yellow, and even ...

How Gemstones Get Their Colors - GemSelect


Mar 11, 2008 ... Learn how the different gem varieties get their color. ... meaning that they are colored by impurities or trace elements in their crystal structure.

Why do different crops of crystals have different colors ...


Nov 7, 2012 ... For the same compounds, why do crystals obtained from different crops not have the same color? And in NMR spectra, they are same?