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Pleochroism

en.wikipedia.org/wiki/Pleochroism

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

www.chemistry.co.nz/crystals_light.htm

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 ...

How Gemstones Get Their Colors - GemSelect

www.gemselect.com/other-info/about-gemstone-color.php

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.

Color: Mineral Properties - The Mineral and Gemstone Kingdom

www.minerals.net/resource/property/color.aspx

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.

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

www.researchgate.net/post/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?

Color symbolism and crystals

www.sunnyray.org/Color-crystals.htm

In order to grasp the concept of color formation in crystals, let us take into consideration different metals. In metal crystals, a certain number of outer electrons is ...

Why do crystals have different shapes? | Reference.com

www.reference.com/science/crystals-different-shapes-a11cef1cf679e5ae

Crystals grow in different shapes because of the internal symmetry of the crystal and the growth rate along the direction of the crystal. The arrangement of the ...

The meanings of Colors - Crystal Cure

crystal-cure.com/color-meanings.html

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

Color Energy and Color Therapy — Crystal Meanings

meanings.crystalsandjewelry.com/color-energy-and-color-therapy/

Learn about the energies of different colors, how they affect us, and what they mean in color therapy.

Crystals and Gemstones - Crystalinks

www.crystalinks.com/gemstones.html

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 ...

More Info

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

earthscience.stackexchange.com

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 ...

Crystal Colors Explained | Crystal Vaults

www.crystalvaults.com

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 ...

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

www.sciencedaily.com

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