What are the special optical effects of colored gemstones?

Colored gems are attractive due to special lighting effects. Some gems are not highlighted. But there are special lighting effects such as starlight effect. photoelectric effect and color changing effects These special lighting effects have a special beauty that adds a little mystery to gems and doubles their value. Below is a short introduction. About general lighting effects and gems.
cat eye effect: Some gems and jade cut into the shape of a cabbage have a bright waistband on their surface. And the phenomenon in which the moving light band or light band turns on and off when the sample rotates is known as the photoelectric effect. It is mainly caused by closely paralleled, needle-like, tubular, or fabric-like impurities.
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Starlight effect: Some cabochon and jade ornaments have two or more glittering lines intersecting on the surface. This is a star effect. They are usually star trails or six-point halos, mainly due to internal two- or three-way dense merging.
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Moonlight Effect: A diffused reflection effect caused by light reflected by inclusions or structural features in a gem. For example, a moonstone is a hyperfine structure composed of orthofeldspars and albytes. There is a slight difference in refractive index. causing floating blue or white light also known as moonlight effect.
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Discoloration effect: A phenomenon in which the same gem exhibits several color changes simultaneously under white light irradiation. As you switch gems and light sources, the colors continually swim, change, shine, and charm. revealing a spectrum that is as colorful as rainbows same as opal Opal’s unique color changing effect is the main feature that sets it apart. Opal has many colored scales. This often blurs the edges of the normal scab at both ends of the scab. make it look like a line in either direction.
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Rainbow effect: when light shines through a thin film or layer. with different refractive indices The rainbow colors that occur on or within the gem become a halo effect, such as flattery or labradorite.
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Post time: Apr-19-2022