Welcome to the IGS Forums! Please note that you'll need to create an account to participate in these forums. Please read our brief Forum Rules and Etiquette.
Show More Information
Forums Home » General Gem-Related Discussion

Does Lab Topaz Exist

Tagged: 

This topic contains 1 reply, has 2 voices, and was last updated by Profile photo of mhutton mhutton 1 year, 3 months ago.

Viewing 2 posts - 1 through 2 (of 2 total)
  • Author
    Posts
  • #198722
    Profile photo of joe-metzger
    joe-metzger
    Participant

    I seem to get asked frequently and I cannot find a definitive answer on the internet if “lab” topaz exists. I know many gemstones can be lab created, but topaz is not one of them…correct? If you state it is available is it a cost prohibitive lab stone thus not usually requested like lab created aquamarine? If available in what colors is it made…all or limited? Any feedback is appreciated.

    #198732
    Profile photo of mhutton
    mhutton
    Participant

    The answer is a definite yes that lab topaz exists. I found two scientific papers on its synthesis. The paper dated 1993, made mention to earlier synthesis in 1973 by Rosenberg. I have not been able to locate Rosenberg’s paper, so the first synthesis may be earlier than that. The 1993 paper was authored by B. Wunder, et al in American Mineralogist, 78, 285-297; “Synthesis, stability, and properties of Al2SiO4(OH)2: a fully hydrated analogue of topaz”. I never see any natural looking inclusions in the “mystic topaz” (optically coated clear or white topaz) coming out of Thailand or China nor in much of the neutron bombarded blue color enhanced topaz as well … so at this point, I would have to conclude from general observation that most of it is being synthesized cheaply somewhere somehow!! 😀

Viewing 2 posts - 1 through 2 (of 2 total)

You must be logged in to reply to topics in this forum.


Take your love of gemstones
To a New Level
Search in radius 25 miles

Recent Community Posts

eNews Signup

Skip to toolbar