Optical effect of jewels and jade

Jewelry jade refers to various (including) rock mineral materials that can be used as decorations, crafts or souvenirs. It is a pair of natural jewels (including natural gemstones, natural jade and natural organic gemstones) and artificial gemstones (including synthetic gemstones, artificial Gemstones, flat stones and re-created gemstones, collectively referred to as gemstones.

Optical effect of jewels and jade

Cat's eye phenomenon

Some jewels and jade cut in a curved shape, a bright band of light on the surface will move with the rotating band of the sample or the band phenomenon of the band will appear as the cat's eye effect. Most are due to the inclusion of dense, parallel arrays of acicular, tubular or flaky inclusions.

Starlight phenomenon

Some jewels and jade cut in a curved shape have two or more intersecting bright lines on the surface for starlight effect. Often a four-shot or six-shot star line. Mostly due to the internal containment of dense two-way or three-direction needle-like inclusions.

Color change effect

The phenomenon of blue-white brilliance: a slow-reflecting effect produced by the light reflected from the inclusions or structural features inside the gemstone is called the brilliance effect. For example, moonstone is an ultra-fine structure in which the feldspar and albite are slightly intersected by a slightly different refractive index, resulting in a floating pale blue or white brilliance, also known as moonlight.

Sodium phosgene phenomenon

It is often mistaken for a lottery; in fact, this is due to the fact that the bilayer in the calcium-sodium plagioclase is disturbed by light, diffraction, and some diffusion.

Play color phenomenon

When a light is reflected from some unique structure, the color or a series of colors produced by interference or diffraction acts as the direction of observation changes. Such as opal.

Iridescent phenomenon

When the light passes through a film or a thin layer with a different refractive index, the iridescent color generated on the surface or inside of the gemstone is an iridescent effect, such as: fire agate, iridescent agate.

Color change effect

It refers to the phenomenon that gems display different colors under the influence of different environments such as temperature, light and humidity. It is caused by external causes of discoloration. It is commonly observed by two sources of sunlight and incandescent lamps.

Sprinkling gold

The scintillation effect of the internal fine flaky mineral inclusions on the reflection of light.

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