[Jewelry making - Article 00025] - Re: [Orchid] Agate or Jasper?

[coralnut]

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    Dave, In very simple terms: 

    Massive quartz with no crystaline structure, translucent, usually
    with some color - such as chrysoprase = chalcedony, 

    Massive quartz WITH BANDING of any color usually translucent to
    semi-translucent - such as Fairburn geodes, or layered-such as
    amethyst lace = agate. 

    Massive quartz with NO banding, (i.e. amorphous) with any or many
    color(s), semi-translucent to opaque = jasper, 

    Massive quartz with areas of color and clear areas with isolated
    banding, translucent, semi-translucent and/or opaque areas = what
    some term jasper-agated or jagate. 

    Hope it helps....this field is very confusion.  Ann and Si Frasier
    have been writing on this subject for many years with the Lapidary
    Journal as has Bob Jones with the Rock & Gem magazine. After 30 or so
    years, they still have not finished!  So don't feel bad. 

    Cheers from Don at The Charles Belle Studio in SOFL where simple
    elegance IS fine jewelry. dcdietz AT attbi.com

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