"There is considerable difficulty in distinguishing genuine stones from false the more so, as there has been discovered a method of transforming genuine stones of one kind into false stones of another. In his encyclopedia Naturalis Historia the ancient Roman author and naturalist Pliny the Elder speaks at length about techniques used to change the colour of one gemstone to make it look like another. In one respected gemstone reference it's stated in order to achieve the black colour stones are soaked in sugar or honey before being treated with sulphuric acid. Throughout history the vast majority of black onyx has been dyed. Most black onyx is either black agate or black chalcedony. It may also be a single coloured agate with alternating shades of light and darker coloured bands.Īlthough onyx and agate are both varieties of chalcedony, the main difference is the bands in onyx are parallel whereas in agate they're curved. With regards to colour, onyx is a black and white banded variety of the mineral agate. In the vast majority of cases it's used incorrectly. Onyx is a natural mineral used for a wide variety of purposes.Īs well as for gemstones onyx is used for fireplace surrounds, household furniture and a wide array of ornaments.Ī great deal of confusion exists regarding the correct use of the name "onyx". Onyx Stone Meaning and Healing Properties Contents
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