Special Optical Effect In Gemstones
Gemstones show different optical properties. Natural gemstones consist of optical effects. Before buying natural gemstones, you can observe the optical properties, which is as follows.
Andularesence: It shows a billowy, movable cloud effect seen in some stones. It is mainly found in moonstone.
Asterism: It is used to describe the display of star effect. It is seen, when the stone is cut in a nonfaceted style.
Chatoyancy: This effect is produced in some stones of a thin, bright lines across the stone. It is found in Cat’s eye.
Iridescence: It has a rainbow effect produced by a thin film of air or liquid within the stone. Most of this property is found in cracked stone.
Luster: It refers to the degree to which the stone reflects light. It is usually found in Diamond. Pearls are also evaluated for their luster. Luster in Pearl is called orient.
Play of Color: It is used frequently to describe the fire seen in Opal, or the multiple flashes or pattern of color.
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