Milky Quartz is the white, translucent to opaque variety of Quartz. Flawless and very large cuts may be cut from Rock Crystal.
AMETHYST ROCK VALUE FREE
The colorless, transparent variety of Quartz, free of any impurities, is known as "Rock Crystal". See the Rose Quartz gemstone page for more details. Rose Quartz is often milky or hazy, and it may lack good transparency. The rosy pink variety of Quartz is known as Rose Quartz, and its color is usually soft, ranging from very light pink to medium pink in intensity. See the Smoky Quartz gemstone page for more details. Despite its dark color, it is rarely opaque. It ranges in color from light brown toīlack. See the Citrine gemstone page for more details.īrown "smoky" variety of Quartz. Light yellow or lemon yellow Citrine is often called Lemon Quartz in the gem trade. It is usually colored by heat treatment of Amethyst or Smoky Quartz. See the Amethyst gemstone page for more details.Ĭitrine is the yellow, orange, or reddish-brown variety of Quartz. Amethyst ranges from light to dark purple. The main crystalline Quartz varieties used as gemstones are described below.Īmethyst, the purple variety, is the most popular and valuable Quartz gemstone. Various impurities are responsible for the extensive range of colors. Pure Quartz, which is also known as Rock Crystal, is colorless. White, Colorless, Blue, Red, Green, Yellow, Orange, Brown, Pink, Purple, Gray, Black, Multicolored
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