This indicates that they are visible with different colors when they are seen under lights with varying polarization. Natural prasiolite crystals are usually dichroic.
It is also somewhat sensitive to light, which means the stone is likely to fade with prolonged exposure to sunlight. It features a glassy shine, a variety of cuts or shapes, different carat weights, a very high sparkle, and a conchoidal fracture. In general, green amethyst is light green and the most suitable specimens are allegedly transparent, as there are no internal impurities. However, the inclusion of radiation makes it go green. Orange or yellow transformation results in citrine. However, those having special iron compounds instead become green. The majority of amethyst becomes orange, yellow, or brown when heat treated. It features a trigonal or hexagonal crystal system, a brittle tenacity, no cleavage, a gravity of 2.65, and a hardness of 7 as per the Mohs scale. Physical PropertiesĪmethyst green is an oxide mineral that can express a myriad of green color shades. Green amethyst or prasiolite is available in different colors, which include lime green with a bit of yellow and deep pine-forest green. Thus, a heated stone is as valuable as its original form. Heat treatment is quite common in the gemstones industry.
After been treated with heat, amethyst loses its natural purple shade and becomes green. There are times when green amethyst contains more amount of iron compounds inside. Indeed, it is the most precious stone of the quartz family. It is a purple form of quartz or a silicon dioxide crystal (SiO2) and gets its violet color due to irradiation of iron impurities (Fe3+) along with the significant quantities of trace elements. PropertiesĪmethyst is originally a deep purple or violet stone, which is the only gem having this color. The color is likely to vary, ranging right from yellow-green to leafy green. It can even be a part of amegreen, a stone that expresses both amethyst colors. However, it may also be a piece of transparent pale green quartz. Green amethyst is likely to start its journey as purple amethyst. Thus, green amethyst is a misnomer just as red emeralds and yellow emeralds are red beryls and heliodors, respectively. By definition, amethyst is a purple form of quartz. Green amethyst is actually an imprecise name that some of us use to refer to prasiolite. If someone drank from a goblet or an amethyst cup, he would not become drunk at all.Īccording to Greek mythology, amethyst refers to a crystal-dyed purple rock formed by the tears of Dionysus, the deity of wine and gaiety. In ancient times, it was believed that this stone could prevent the holder from becoming too drunk and could also result in a sober mind. Thus, it is believed that amethyst tends to ward off drunkenness. As per the Greek and Biblical mythologies, amethyst means ‘not drunken’. Indeed, many semi-precious stones are nothing but forms of quartz, such as carnelian, citrine, rose quartz, and smokey quartz.Īmethyst also comes from ‘amethystos’, a Greek word mentioned even in the New Testament. Prasiolite or green quartz just does not possess the ring similar to green amethyst. This is because quartz is available in plenty on the planet. Second, several people believe an amethyst to be one of the finest semi-precious gems but do not consider quartz as very special. Prasiolite is actually a name given to green heat-treated quartz. This connection seems to allow using the misnomer. First, green quartz is produced by giving heat treatment to a few varieties of quartz, which is usually an amethyst. Presumably, there could be two reasons why many of us do not refer to it as green quartz. It is exactly what this semi-precious stone means. It seems a bit silly but a green amethyst is actually green-purple rather than green quartz. However, a few stones are known by their color. Generally, gemstones are known by the name of their contained mineral, such as emerald and diamond. Amethyst by itself is nothing but purple quartz.
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