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This list digest contains the following message subjects:

1. LapDigest News for Issue No. 28 Thurs 7/17/97
2. NEW: How is Goldstone Made?
3. RE: Sugilite Rough
4. RE: Bulk Slabbing of Nodules
5. New: Madagascar Laboradorite Colors
6. BIO: Steve Tinsley


Date: Wed, 16 Jul 1997

Subject: LapDigest News for Issue No. 28 Thurs 7/17/97

I have had several inquiries about whether items in LapDigest may be used in club bulletins, etc. I have had to say that everything is copyrighted automatically, by law, and only the author may give permission to copy and use such items. (I know it's 'Mickey Mouse', but that's the law and I'm the type to keep out of trouble)

But there is a way around it. If each person submitting a query or response would add the four words: --non-commercial republish permission granted-- , then the whole problem would be solved. So I am asking each of you to add these words, and then the items may be freely distributed throughout Club bulletins.

I have added a few words about this in the Welcome letter, in the HELP file, and in the footnote below. I will remind you of it from time to time.


Date: Thu, 17 Jul 1997
From: Mr David Friedman <friedman@rmit.EDU.AU>

Subject: NEW: How is Goldstone Made?

Many years ago I cut some cabs from a man-made glass called "Russian
Goldstone ". It came in 2 colours, brown and blue. Pretty horrible looking
material but I was intrigued by it's manufacture.

Does anyone know the method/technique to produce this artificial glass?
I've tried a few furnace mixes but haven't come close.

Thank you,
David Friedman (Australia)
(Ed. Note: The only reference to goldstone I could find in the references at hand was one paper in LapJournal as follows:
The Glamour of Goldstone 73:08:828
See the file: LJReprints.txt in Archives on how to get reprints from the
Lapidary Journal. If any of you can suggest other references to check, please do so.) hale

Date: Wed, 16 Jul 1997

Subject: RE: Sugilite Rough

Greetings friends:

My appologies if this has been touched upon already. Many of the shows we
attend have dealers who have arrayed a myriad of water-filled tubs containing slabs or nodules. The purpose behind this is to allow the customer to get an idea of what the materials would look like once having been polished. Blinded by the beauty of the stones, we'll take these home and begin cutting. It isn't until we're into the polish that we see pits, fractures, or other nasties develope that hadn't been noticed when the rock had first been inspected.

As a dealer who's side business is the sale of slabed materials, allow this advice to be given. Dry these before you buy. When dry, the flaws will become more evident, allowing you the ability to determine whether there are cuttable areas within. If there is pitting, or fracturing on the surface, we can safely assume that these will also occur inside the stone as well.

The oiling process is more dubious, for the above reasons. It is also harder
to remove on site for closer inspection, unless you are in the habit of carrying alcohol and towels. Trust your instincts Carla, sounds to me that you'd made the right decision.

Happy cutting!


Date: Wed, 16 Jul 1997

Subject: RE: Bulk Slabbing of Nodules


Write the book and I'll buy a copy, autographed of course. Thank You for the
advice. When testing is complete on my end I'll let you know how it works
with the Almag Oil. Sump cleaning time, yuck %-p

Date: Thu, 17 Jul 1997

Subject: New: Madagascar Laboradorite Colors

I was wanting to know if anyone has seen labradorite,spectrolite in a deep
lavender, pink or salmon. I picked up a couple of pounds of some Madagascan
rough and found a small pocket of these very unusual colors. One slab
produced three stones, one of each color. Some of the new material coming out
of Madagascar is quite beautiful with great vibrant colors, but deep purple
or pink? I've been asking around and no one else seems to have seen this
before. Just how rare is this?

Date: Thu, 17 Jul 1997

Subject: BIO: Steve Tinsley

My name is Steve Tinsley, I've been making jewelry as a hobby for about 12
years. Only in the past 2 or 3 have I been cutting my own stones.

Currently I'm using a Diamond Jem cabbing machine, Diamond Tech trim saw
and Ray Tech 10" slab saw. I'm also new to the faceting, but that's another

My most favorable choice are the phenomenal stones. Such as asteriated,
cat's eye, labradorite and of course my all time favorite, OPAL..

As of yet, I haven't attended any classes in lapidary but hope to change
that in the future. I'd like to see this become more of a profession than a
hobby, but one step at a time. Right?
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