[Jewelry making - Article 00990] - Re: [Orchid] Using the burnisher

[Linda Walsh]

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


>      I have to assume that my finishing abrasives will damage all
>     stones except diamond, ruby, and sapphire. 

    Be careful, Howard; your assumption that unknown abrasives won't
    harm ruby and sapphire could allow you to harm a stone.  I have gone
    to some trouble to find the minerals used in some of the products
    your mention, and the majority of them contain either silicon
    carbide (mohs hardness 9.5) or aluminum oxide (equal in hardness to
    ruby and sapphire- 9.0). The 3M website has the composition of many
    of the unknown products you've listed, but it takes forever to find
    the stuff you're looking for on the site because the company has
    such a wide variety of products.  In my wide array of supplier 
    catalogs, I usually refer to the Gesswein catalog first to find the
    mineral used in an abrasive product; they have included this
    information more often than the other vendors. Hope this helps! Linda


____________________________________________________________________
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
____________________________________________________________________