Natural Topaz is available in several different colors: Colorless (White), Yellowish-Orange with some Peach in it (Imperial) as well as Light Blue, Yellow, Orange, and Pink.  Topaz is mainly mined in Brazil, Mexico, Sri Lanka, Africa, and China.  We offer Natural untreated Topaz in White, Imperial, Golden, and Pink shades, which are all more expensive than the treated varieties of Blue.
Blue Topaz starts as an off color, usually bluish-gray to silvery-gray in color, and it is irradiated with gamma or electron Irradiation, in conjunction with heat to produce bold colors like the blue-green color "London Blue", the light blue color "Sky Blue", the medium blue color "Swiss Blue", and the more intense blue color "Maxi Blue".  These colors become permanent treatments to give the gem a very bright, durable, and attractive color, appropriate for any kind of jewelry.  There are several other types of treatments being used on some of the Topaz on the market to produce a variety of other colors, but most of those treatments are only on the surface of the gem and/or not permanent treatments, therefore we will not offer them.
CARE - Jewelry featuring Topaz should not be cleaned in an ultrasonic or steam cleaner.  We recommend Ionic Cleaners and/or warm, soapy water and a soft brush as the best way to clean Topaz jewelry.

Blue is the most popular color used in jewelry.  Some Blue Topaz is produced in nature, however, the natural shade is generally too pale to excite any interest.  The colors like London Blue, Sky Blue, Swiss Blue, and Maxi Blue are irradiated with gamma or electron  Irradiation, in conjunction with heat.  The value increases with the intensity of color, provided it is attractive.  At first sight Blue Topaz has a resemblance to aquamarine, but, aquamarine always displays a strong pleochroism from blue to greenish blue, whereas Blue Topaz is a more definite blue or blue with a grayish tone.
TREATMENTS - The Bright Blue shades of Topaz readily available in the market actually begins as a very light off color stone then it is treated here in the states, irradiated with gamma or electron Irradiation, to produce the vibrant Blue Shades like London Blue, Swiss Blue, and Maxi Blue. Then it is heated to stabilize the color.

The Yellow to Brownish Yellow is the least expensive stones of the Yellow hues.

The Golden and peachy Orange shades are more vibrant, more desirable and more expensive.

The most expensive and most desired of the Yellow tones, ranging in shades of peachy Orange to medium intense Orange to reddish Orange, with sherry Red, deep Pink, and reddish Orange hues. Imperial Topaz is found in only a few locations in the world, the small Island Country of Sri Lanka, and Ouro Preto in the state of Minas Gerais in Brazil. Gem experts still expect the Imperial Topaz sources to be completely exhausted within a few years.
This is a very highly treasured Collectable Gemstone that will increase in value as supply is reduced.

Pink Topaz is usually a light to medium pink in color.  It is rare to find stones without the typical zoning of color.  The most common cut is oval or pear shape.  Pink Topaz is strongly transparent and lustrous, and can be mistaken for kunzite, morganite, and some pink tourmalines.  When it is a fairly intense color, it can be one of the most valuable of the second level of gemstones like aquamarine, etc.  Pink Topaz comes mainly from Sri Lanka and Brazil.

These inexpensive stones are actually a Citrine, and should be properly called "Smoky Quartz".  Unfortunately "Smoky Topaz" is not in the more precious Topaz family at all, just a very inexpensive variety of Quartz,   It its sold by many unscrupulous persons and unknowing jewelers as "Smoky Topaz" in an attempt to create more sales in the November birthstone month.
Although Topaz of any color is the birthstone for November, other Gemstones have also been used as a November birthstone substitute.  Yellow is the dominant color used in November birthstone jewelry.