Smokey quartz when heated can turn yellow, also making citrine although this is less commonly done than heating amethyst. Tiger'seye which is usually a golden yellow color will become red upon heating.
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Smokey Quartz is the brown 'smokey' variety of Quartz. It ranges in colour from light brown to black. Smokey Quartz has recently increased in popularity in the gemstone trade. The very dark, almost opaque form is sometimes called Morion.
Smokey Quartz
A dark variety of quartz that is deep brown in color with a smoky appearance.
Snap-bar Closure Earrings ...
See smokey quartz
Sodalite
A mineral which is a component of lapis and generally translucent, usually blue in colour ...
Smokey Quartz
Color is brown (brown transparent) to black. Has hardness of 7 on the Mohs Scale.
Snake Chain
The look of this chain is similar to the body of a snake as thin bands of metal are closely secured together.
Overview: Smokey quartz or Smoky quartz is the National Gem of Scotland. Smoky quartz commonly occurs in quartz veins where it crystallizes inside rock cavities known as vugs.
Citrine is also often created by heating natural amethyst or even smokey quartz in a lab to create it's golden yellow color. Citrine is used as the November birthstone.
Copper
A ductile, malleable, reddish-brown metal.
Citrine crystals can also form together with amethyst or smokey quartz to form a bi-colored quartz called ametrine.
Some citrine produced by heating smokey quartz; often produces a greener yellow or green color.
Sometimes sold as "quartz topaz" or "topaz quartz" or "topaz"; Misrepresentation.
Distinguished from topaz by R.I., S.G. and color zoning.
Quartz: This mineral family contains gems representing every color, transparent to opaque: Citrine, Ametrine, Praseolite, Amethyst, Rose and Smokey Quartz, Agate, Chalcedony, Carnelian, Adventurine, Bloodstone, Cat's-eye, Chrysoprase, Jasper, ...
A very hard mineral composed of silica, found worldwide in many different types of rocks, including sandstone and granite. Types include amethyst, smokey quartz, tiger's eye quartz, rose quartz, among others.
Citrine is a yellow quartz stone, sometimes mistaken for gold topaz. Citrine however, is much cheaper than real gold topaz (imperial topaz). Scottish topaz or Cairngorn could be defined as something between citrine and smokey quartz.
Enamel Garnet Gemstones Gold Jade Kunzite Lacquer Lapis Lapis Lazuli Lavender jade Lemon Quartz Moonstone Morganite Mother of Pearl Onyx Opal Pearl Peridot Pink Sapphire Platinum Rock Crystal Rose Quartz Rubelite Ruby Sapphire Silver Smokey Quartz ...
Citrine is a yellow quartz which is a different gem family altogether than the Topaz family. The primary source of Citrine is Brazil. Citrine is found in every shade of yellow imaginable. Most Citrine is heat treated Amethyst or Smokey Quartz.
Garnet, Tourmaline, Zircon, Lapis-Lazuli, Turquoise etc.
Labradorite and other Gems
Quartz: Citrine, Amethyst, Smokey Quartz
Appendix A: List of Famous Diamonds
Appendix B-E: Gemstone Properties
Gemstones in Literature: Index ...
 See also: Quartz, Stone, Color, Citrine, Pink
  
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