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The yellow color quartz used as gemstone in the jewelry industry is known as citrine. Citrine is a semi-precious gemstone which is usually found in yellow, orange or golden hues. This gleaming golden gemstone is often sold by unscrupulous dealers as more expensive orange-yellow topaz.

The name citrine is derived from the French word ‘citron’, meaning lemon. The molecular formula of citrine is SiO_{2 ,} with a hardness of 7 on Mohs scale. Citrine is fairly resistant to scratches and cracks thus making it an ideal choice for a daily wear stone. The leading producer of naturally mined citrine is Brazil, with maximum production coming from the state of Rio Grande Do Sul. The other deposits of citrine are found in Russia, Madagascar and France.

The naturally occurring citrine is pale yellow in color. While the citrine used in jewelry is darker in color. This color change occurs due to the heat, which is applied to amethyst to turn it into yellow color gem called citrine. For this color change to happen naturally, the gemstone amethyst has to be near a heat emitting source in the earth’s crust. This gemstone should be protected from sunlight as a lot of exposure to sunlight will cause a permanent darkening effect over the stone or jewelry.

Citrine is the birthstone for the month of November and anniversary gemstone for the seventeenth year of marriage. This yellow color gemstone looks pretty especially when set in white gold. The various forms of body adornments like rings, bracelets, earrings and pendants are usually in demand, but the stone’s brilliant is at its best when set in a pendant.