[Jewelry making - Article 01576] - Re: [Orchid] Amber colors....

[jake]

========[ Invite a Friend - http://www.ganoksin.com/invite.htm  ]========

>     Actually, the various amber colours do occur naturally from yellow
>     to red to green - even blue! (from the Dominican republic). But
>     these are rare and as you know a lot of amber is synthetic these
>     days.." 

    I think I may have written about this, I may not have posted it
    here. 

    Want red amber? 
    http://www.mexican-amber.com/rough_index.htm

    Want blue amber? 
    http://www.ambarazul.com
    See also, other colors. 

    Want bulk Baltic amber, how much?
    http://www.amberworkshop.com/raw_amber_materials.htm 

    Here are two good sources of information.
    http://www.museum-albersdorf.de/BERNSTEN/LEXICON.HTM
    http://www.cst.cmich.edu/users/dietr1rv/amber.htm 

    More information at,
    http://www.gplatt.demon.co.uk/map.htm#THE%20INDEX 

    On heat treatment: This is from a cutting house
    http://www.kekgems.com (good source of cut) explaining amber
    treatment, they will tell you what they do, but not the instructions. 


        "Other resources of Amber not from the Baltic region are either
        Regions containing Amber, which is not "old" enough to work
        properly with it (polish, heat treatments etc.) or Regions that
        contain aged Amber but not in commercial quantities and therefore
        also being expensive, resp. not available." 

        "Therefore Baltic Amber is the only amber, being available and
        old enough (45-50 million years), to get a cutting job done,
        which clients do require. Most of the natural rough stones are
        milky, pale or translucent but very light yellow. To match the
        taste and the requirement of the consumers, very special
        techniques of heat treatment for these stones has been developed,
        whereas each company, working with these fine stones, keeps their
        developed technique as a secret know-how." 

        "Just by heating these stones (at low temperature), the
        following general changes will appear: If heat and air (as in a
        regular stove is the case) is supplied to the stones, the
        material will clear up and darken. If stones are heated under a
        vacuum (i.e. by an autoclave), stones will clear but not changing
        their color towards a darker shade. By special techniques, heat
        may cause Glitter to appear inside of the stone." (This also
        occurs naturally, most all has a human hand in it though, and if
        done right brings better a price than plain.) "Under such a heat
        treatment, the natural properties of amber is not changing, so
        that such a heat treatment may never be proofed and the amber is
        still considered to be a natural Amber."
____________________________________________________________________
T h e   O r c h i d   L i s t
Open Electronic Forum for Jewelry Manufacturing Methods and Procedures
____________________________________________________________________
Orchid FAQ:
~ http://www.ganoksin.com/orchid/faq.htm
Orchid Archives:
~ http://www.ganoksin.com/orchid/archive
Orchid Galleries:
~ http://www.ganoksin.com/orchid/gallery.htm
Invite a Friend:
~ http://www.ganoksin.com/invite.htm
____________________________________________________________________
Tips From The Jeweler's Bench - Article Archive
~ http://www.ganoksin.com/borisat/tip_sear.htm
The Jeweler's Selected Bibliography List
~ http://www.ganoksin.com/jewelry-books
Buy Orchid Jewelry:
~ http://www.ganoksin.com/shop
____________________________________________________________________
-Unsubscribe:
-Email: orchid-request AT ganoksin.com Body=unsubscribe subject=blank
____________________________________________________________________