Citrine is a variety of quartz ranging in colors of yellow, yellow-brown, orange, dark orange-brown, reddish-brown. Citrine crystals can form together with amethyst or smoky quartz to form a bi-colored quartz called ametrine.
Some amethyst deposits have been found where the amethyst was changed naturally by high temperatures to brown citrine.
Citrine is the birthstone for the month of November, sharing the title with topaz. Citrine is also the gemstone that celebrates the 13th anniversary of marriage.
The ancient Romans used it for beautiful jewelry and intaglio work. It was also very popular for jewelry in the 19th century. During the Art Deco period between World Wars I and II, large citrines were set in many prized pieces, including the massive and elaborate Art Deco inspired jewelry pieces made for big Hollywood stars such as Greta Garbo and Joan Crawford.
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