It fractures into smooth surfaces that are often curved in a concave shape. You can often tell the difference between the two by looking carefully, particularly if the stones are in their crystal forms.Īmethyst forms a six-sided crystal, often coming to a point. Differences Between Fluorite and Amethyst Both stones will, over time, fade when exposed to bright light. Both can also be purple, but that color alone is no guarantee. You can find both stones in crystal forms, although their shapes differ. Similarities Between Fluorite and Amethyst Most amethysts have six-sided crystals that come to a point. It is a harder stone and does not dissolve in water or glow under black light. How to Identify an AmethystĪmethyst is most commonly purple, although it can be pink and is frequently mixed with other colors of quartz. Chevron amethyst has bands of purple amethyst and white quartz. Green quartz (prasiolite) and citrine (yellow, orange, or brown quartz) are amethysts heated in the earth or in a lab. Lavender, violet and light violet stones are all common, and popular to use for making jewelry and decorating. These colors range from pink, through all the purples, to black. Jewelers sort most amethysts by color, which varies by the amount of iron (and other trace elements) in the stone and the amount of radiation that passes through it. Inclusions of other stones or a bronze tint bring down the value of the stone. Most jewelers sort amethyst by the depth of color, where deep purple is most highly desired. One is by the location where people mine it, giving it a place name to distinguish it.
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