Mystic Topaz is a trade name given to (usually) colourless topaz that has had a very thin layer of titanium metal coated to the pavilion of the cut stone. The very thin layer of metal causes interference patterns with light entering the stone, forming a rainbow of iridescent colours, similar to the colour range you see with oil on water.
This table shows the variety of hues this gemstone can be found in. Click on a photo for more information.
Mystic Topaz Gemstones by Size
This table shows distribution of Mystic Topaz gemstone sizes that are listed on this site. This can give a good indication as to the general availability of this gemstone in different sizes.
1.99ct to 2.28ct2.28ct to 2.58ct2.58ct to 2.87ct2.87ct to 3.17ct3.17ct to 3.46ct3.46ct to 3.75ct3.75ct to 4.05ct4.05ct to 4.34ct4.34ct to 4.64ct4.64ct to 4.93ct