![]() The Indian gemologists describe the crystal as a protector for harmonious relationships. In ancient Indian and Persian tales is referred to as a protector from evil. The English word “nail” is cognate with the Greek word. The stone with flesh-colored and white bands can sometimes resemble a fingernail. Allows you to face your shadow side with courage and learn important lessons so that old patterns and traumas can be released.īlack agate meaning: it comes through Latin, of the same spelling, from the Greek meaning “claw” or “fingernail”. Enhances protection and shields you from negative energies. The following section is pseudo scientific and based on cultural beliefs.Įncourages sensibility and clear thinking. Black onyx meaning and healing properties benefits In addition to dye treatments, heating and treatment with nitric acid have been used to lighten or eliminate undesirable colors. These techniques are still used, as well as other dyeing treatments, and most so-called black onyx sold is artificially treated. ![]() Treatments for producing black and other colors include soaking or boiling chalcedony in sugar solutions, then treating with sulfuric or hydrochloric acid to carbonize sugars which had been absorbed into the top layers of the stone. The first-century naturalist Pliny the Elder described these techniques being used in Roman times. The majority of carved items sold as chalcedony today are this carbonate material.Īrtificial stoness have also been produced from common chalcedony and plain agates. This material is much softer than true chalcedony, and much more readily available. The name has also commonly been used also to label other banded materials, such as banded calcite found in Mexico, India, and other places, and often carved, polished and sold. Most chalcedony on the market is artificially colored. Artificial treatments have been used since ancient times to produce both the black color in black onyx and the reds and yellows in sardonyx. It is perhaps the most famous variety but is not as common with colored bands. Sardonyx is a variant in which the colored bands are sard, shades of red, rather than black. Its bands are parallel to one another, as opposed to the more chaotic banding that often occurs in agates. It is cryptocrystalline, consisting of fine intergrowths of the silica minerals quartz and moganite. The stone is formed of bands of chalcedony in alternating colors.
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