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LAPIDARY ARTS and FACETERS DIGEST
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Issue No. 269 - Monday, February 16, 2004
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Moderated by: Thurmond Moore III
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Committed to carrying on the fine works of
Hale Sweeny and Jerry Dewbre
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POST TO EITHER LINK BELOW:
lapidary@caprock-spur.com
faceters@caprock-spur.com
====================================
VISIT OUR WEBSITE TODAY
http://www.gemcutters.org or
http://www.facetersdigest.org
*******************************************
Hi all,

Good list today. Keep those post coming in.

Thurmond

*******************************************
Index to Today's Digest

01  RE: Cutting the purple sapphire
02  NEW: What do you do with your cut stones?
03  RE: Cleaning slabs
04  RE: Silver Heat Hardening
05  NEW: Books for Wirewrap instruction
06  NEW:  Faceting classes
07  NEW: Use of the Index Splitter
08  NEW: Thanks
09  NEW: Looking for Dave from Mexico and Mark Linnci
10  NEW: Unusual Color-Change Garnet
11  FS: awesome Morrisonite rough

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Message:01

Subject: Cutting the purple sapphire
Date: Fri, 13 Feb 2004 21:04:49 +0000
To: lapidary@caprock-spur.com
From: denney.wilson@att.net

     If you are certain that the stone will star, you will have a far more valuable
stone if you cut the purple sapphire as a small star stone rather than as a larger
purple cab.  Star stones usually draw a premium because they are rare.  However, if
all you get is a glow and not a real 6 ray star, you are better off with the larger
cab.  You will have to take a chance either way.

Denney L. Wilson
Wilson Lapidary

__________________________________________________________
Message:02

Subject: What do you do with your cut stones?
Date: Fri, 13 Feb 2004 21:20:52 -0500
To: lapidary@caprock-spur.com (LapidaryArtsDigest)
From: mskelly <mskelly@gte.net>

Hello the List
         After faceting for three or so years, I've amassed a small
collection of stones. I am not situated in a manner where I can sell very
many of my stones for what they are worth, so I keep them in a box for
viewing from time to time. And, when I have a special occasion that is
worthy, I give them away.
         Valentine's Day is such an occasion. My sweetie is partial to
aquas, partly because of their beauty and party because it is her
birthstone. So for Valentine's Day she received an aqua in the Hor-I-Zon
Sun cut designed by Jeff Graham and mounted on a pierced sterling silver
rose. If you want to see a picture, it's half way down the page on the left at
http://www.the-gemmery.com/Jewelry-Making/Silversmithing/silversmithing.htm
along with some other things I've done with my stones.
         I've learned a little silversmithing for my stones. What do you
folks do with yours?
         Regards,
                 mike

mike in West Coast Florida
www.the-gemmery.com

__________________________________________________________
Message:03

Subject: Re: Issue No. 268 - Friday, February 13, 2004
Date: Fri, 13 Feb 2004 23:09:12 -0500
To: LapidaryArtsDigest <lapidary@caprock-spur.com>
From: Kreigh Tomaszewski <Kreigh@Tomaszewski.net>

LapidaryArtsDigest wrote:
> Message:02
>
> Subject: Subject: NEW Cleaning slabs
> Date: Mon, 09 Feb 2004 18:46:30 -0700
> To: lapidary@caprock-spur.com
> From: "Phil(NM)" <goldpnr@yahoo.com>
>
> > Message:03
> >
> How about: Soak them in a bucket with a water/detergent solution (like a
> few small squirts of Dawn dishwashing liquid) then rinse lightly and put
> them in the dishwasher with your regular dishwasher detergent. Will
> clean and dry them too!
>
> HTH,
> Phil(NM)

Most modern diswasher detergents contain compounds that react with many
common copper containing minerals to form nasty toxics. Pay some
attention to what you wash.

Other than that I would only caution you to check with your spouse first
(if married) before filling up (and emptying!) the dishwasher with
rocks.

And yes, I will admit to doing loads of rocks in the dishwasher, rough
and specimens and slabbed stuff.

Kreigh

__________________________________________________________
Message:04

Subject: Re: Issue No. 268 - Friday, February 13, 2004
Date: Sat, 14 Feb 2004 05:24:10 -0500
To: lapidary@caprock-spur.com (LapidaryArtsDigest)
From: Donald Allen <donallen@gwi.net>

RE: Moderators Note: From " The Complete Metalsmith" by Tim McCreight.
HEAT HARDENING: "After all soldering is done, heat to 536 F and hold
for 2.5 hours. Quench in pickle and finish as usual." (do this after all
soldering is done)

Thurmond

That's a new one on me, hard to believe, after working with that metal
professionally for 40 years, but It's refreshing if it works.
Don

Hi Don,
Tim's explanation is that at that temp the metal
begins to recrystalize. During this process the number of dislocations
and
vacancies is reduced giving a much more ordered crystal alignment in the
metals structure.

Thurmond

I don't doubt it being possible. Refiners have been effecting changes
with metals that many artisans have been unaware of for a long time. I'm
glad he called it heat hardening and not tempering. It would be
interesting to put a file or a graver to a heat hardened piece to see
what happens.

Don

__________________________________________________________
Message:05

Subject: Re: Issue No. 268 - Friday, February 13, 2004
Date: Sat, 14 Feb 2004 13:31:54 EST
To: lapidary@caprock-spur.com
From: Mapples54@wmconnect.com

Subject: Wire wrap
From: Mel Pears, Mapples54@wmconnect.com

I am looking for a good inexpensive book that will explain how to make wire
wrap jewelry. Any suggestions will be appreciated.  Thanks.

_______

Hi Mel,  You might want to get a copy of Ed Sinclairs book. There is also
a forum for wirewrapping on Yahoo Groups.

Thurmond

__________________________________________________________
Message:06

Subject: Faceting classes
Date: Sun, 15 Feb 2004 01:49:40 -0500
To: lapidary@caprock-spur.com
From: TrufflesRussell@netscape.net (James H. Russell)

Hi:
     I have a friend that is trying to find faceting classes in the Twin Cities
area (MN).  Do, you know of any or where I can find some.
     I see no clubs listed for that area.  Here in the Puget Sound area
we have three.  Thats how I found my instructor.
                    Thanks for your help, Jim

--
James H. Russell

__________________________________________________________
Message:07

Subject: Use of the Index Splitter
Date: Sun, 15 Feb 2004 13:41:55 -0800 (PST)
To: LAPIDARY ARTS & FACETERS DIGEST <faceters@caprock-spur.com>
From: Glenn Klein <glennklein@yahoo.com>

Hi All:
 
Some of you know that for years I have been pushing for some name changes for the
left and right control adjuster on our faceting machines, and the process of using
that control as we get flat on a facet while polishing gems.  I have often made it
clear that I personally disapprove of the words Cheater and Cheating. 
Well....although those two bad words are not used in their article, it seems that
the GIA has finally realized that this control itself and the use of it is standard
practice for colored stone faceters, and even with diamond cutters.
 
Some faceters will immediately call this a dead horse.  But stick with me through
this article.  I think it will make most of you realize that the fine tuning we do
left and right on a facet is ever as important as the fine adjustments we make to
our facet angles.  The control and process of using it has nothing to do with bad
faceting talent or being done because the faceting machine must be out of
adjustment.  Index Splitting is done by those faceters who are looking for
perfection.
 
Things matter with everything that is done when cutting extremely high priced
diamond rough.  But with our colored stone faceting, we faceters do not think too
much about the cost differences in the completed gem,after using the control to
obtain flatness on a facet.
 
I found an article in the GIA's current newsletter to be very interesting.  GIA
brings out a couple of points that I had not considered earlier.  Like, not only
about the weight loss that can come from tilting a flat facet, but also how the
light ray patterns can make significant changes from our fine splitting of the
spaces between the teeth of our chosen Index Gear.
 
GIA has always made fine distinctions between what the various stone proportions
and angles do to the return of light.  Cutting at too low pavilion angles results
in windows.  At too high pavilion angles, the light is lost.  It is not returned to
our eye through the crown.
 
Recently, the GIA has begun paying attention to the significance of the lengths of
the pavilion girdle facets and crown girdle facets, as well as to the lengths of
the crown star facets.  These facets cover more than half of the brilliant cut
gem....as GIA points out. The article states, "Recognition of the importance of
these facets is so recent that none of the existing diamond cut grading systems
take them into account."
 
I was amused by some of the statements in the article.  "There is yet another
important variable in the description of the round brilliant that we have not seen
mentioned to date in the diamond literature.  This factor is well known in colored
stone cutting, where it is referred to as "indexing."...."Such wheels come in a
variety of scales....64, 80, 96," etc.  "Indexing is the practice of altering those
positions for some facets, that is, moving their centers slightly in either
direction"...."Index wheels are not used in diamond cutting because of hardness
constraints on the positions and directions of cutting and polishing, but the
technique is still practiced."
 
The crown mains and pavilion mains are best left at the desired positions in the
teeth in the Index Gear, but the crown girdle facets and pavilion girdle facets can
be tilted left or right by the use of the Index Splitter control.  The GIA article
points out that this tilting left or right will change the view of the girdle
itself.  That is, the girdle facet can be tilted towards the side nearest the main
facet or it can be tilted the other way, towards the meet of the next girdle facet.
 Stone weight loss can result by this tilting, which GIA is very concerned with
when it comes to diamonds.  GIA points out that tilting the girdle facet towards
the nearest main facet will result in an addition of weight to the finished gem. 
Tilting the girdle facet towards its joining girdle facet will result in a lower
finished weight.
 
GIA is talking about moving the girdle facet settings by a whole tooth point in the
Index Gear, but the same thing happens as we make our fine left and right changes
with the Index Splitter as we do our splitting.  As we faceters know, IF THE FACET
DOES NOT FIT....WE HAVE TO SPLIT!
 
Using the Index Splitter on the crown girdle facets and pavilion girdle facets
causes the angle where they meet the adjoining MAIN facets to change.  This, as the
GIA article points out, "significantly affects the movement of light through the
diamond, and thus its overall, face-up appearance."  The GIA article shows these
changes, by use of a series of photographs. 
 
And so, the truth is apparent.  If you are faceting high priced colored stone
material, you will be wise to make use of the Index Splitter on your faceting
machine.  Those faceters who cut for competition will all assure you that the use
of the process of Index Splitting is not only desired, it is a necessity for
success.
 
I thank the GIA for publishing their article.  It has been needed for a long time.
 
If you would like to see the GIA article yourself, go to
 
www.gia.edu/newsroom
 
Under Newsroom on the left, click on GIA Insider, and then on Current Issue.
 
Then choose the article:   FROM GEMS & GEMOLOGY: EVERY FACET REALLY DOES MATTER TO
THE APPEARANCE OF A ROUND BRILLIANT CUT DIAMOND.
 
Glenn Klein
Lake Forest, CA USA


__________________________________________________________
Message:08

Subject: Thanks
Date: Mon, 16 Feb 2004 08:02:27 +1000
To: lapidary@caprock-spur.com
From: ronjones@qantas.com.au

I would like to thank all of the guys who offered advice on the problem
that I encountered with my new Raytech faceter.

My thanks especially goes to Marvin Johnson and Don Rogers who were the
main people to be able to help me to sort out the problem and I am pleased
to say that now able to cut my rough gems into finished articles of beauty.

Regards

Ron Jones



__________________________________________________________
Message:09

Subject: Looking for Dave from Mexico and Mark Linnci
Date: Mon, 16 Feb 2004 20:28:13 +0530
To: <lapidary@caprock-spur.com>
From: "Cash Jewellers" <sushila_jain@eth.net>

Hi friends,

I am looking for a friend who is from Mexico and a rockhound.
And Mark Linnci ,a guy use to write in Lap.digest in every digest.
If any of you have info. please send me personally.

Ashish

_______

Hi Ashish,  Bad news, Mark Liccini died last year. I do not know
the other individual.

Thurmond

__________________________________________________________
Message:10

Subject: Unusual Color-Change Garnet
Date: Mon, 16 Feb 2004 10:57:29 -0500
To: <faceters@caprock-spur.com>
From: "Clyde Gilbert" <clyde@emeraldrose.com>

Hi All-

I've recently come into a parcel of what appear to be green, champagne,
and honey- colored grossular garnets from Tanzania and Mali. There are
many stones in this batch which exhibit a color change I've never seen:
The greenish stones change to a dark yellow under fluorescent light, the
honey and champagne stones also change to a pale green or light amber in
fluorescent. The color change runs from approx 40% to 80% in the stones
which have the property present. I've never seen color change garnet of
these type, just the normal red-to-purple/red-to-amber/red-to-light
green- has anyone out there seen garnet which exhibits this different
color change scenario? They are also very clean stones, mostly alluvial
and 2-10cts each.

Thanks,

Clyde Gilbert
Greenwood Studio

__________________________________________________________
Message:11

Subject: awesome Morrisonite rough
Date: Mon, 16 Feb 2004 10:29:25 -0600
To: "LapidaryArtsDigest" <lapidary@caprock-spur.com>
From: "Carol Carter-Wientjes" <lavenderfish@cox.net>

This is an ad that my friend Brian Averett (Triple A Rockshop, Nampa Idaho)
listed at Bob's Rockshop, but thought I'd pass it along to you folks on this
forum who may not have seen it. If you're already familiar with the
beautiful materials Brian carries, then you can be certain that this
Morrisonite will be the cream of the crop. So if this strikes your fancy,
give Brian a holler. Here's the ad.....

I HATE TO BOTHER YOU BUT MUST TELL YOU OF SOME VITAL INFORMATION! I HAVE
STASHED SEVERAL HUNDRED POUNDS OF MORRISONITE ROUGH FOR MYSELF OVER THE PAST 30
YEARS AND IS BETTER THAN WHAT I OFFER FROM MY WEBSITE AS FOR PREMIUM MATERIAL.

INSTEAD OF THE NORMAL 50 POUND SACKS OF THIS GRADE AT $6,500.00 FOR THOSE
WHO COME TO THE SHOP TO PURCHASE FROM MY STASH MATERIAL THAT I HAVE HIDDEN AWAY,
THERE ARE 6 SACKS BEING OFFERED AT $2,950.00 PLUS SHIPPING ON A FIRST COME, FIRST
SEVERED BASIS.

THE REASON OF THE LOW COST AND FROM MY STASH IS FOR THE SIMPLE REASON OF
NO QUESTION ABOUT QUALITY! EVEN THOUGH MY WIFE AND I HAVE BEEN TOGETHER FOR
JUST A VERY SHORT FEW YEARS HER HEALTH IS MORE IMPORTANT THAN THE ROCK AND THE
CASH IS NEEDED DESPERATLY FOR SURGERY. IF YOU HAVE WANTED TO PURCHASE THIS TYPE
OF MATERIAL IN THE ROUGH THIS IS THE TIME AS THIS WILL NOT HAPPEN AGAIN AS BOTH
ARE VERY DEAR BUT THE ROCK GOES. I WISH THAT I COULD GIVE IT AWAY BUT I CAN'T,
THIS IS WHY I AM USING MY STASH FOR IMMEDIATE SALES AND THE PRICE IS FIRM.

THANKS   BRIAN

Brian Averett
www.triplearockshop.com


Thanks everybody, Carol Carter-Wientjes


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Post something from your experiences in gemcutting today!
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TODAY'S FUNNY ~

From: mskelly <mskelly@gte.net>

Subject: How many mailing list members does it take to change a
lightbulb?
1 to change the light bulb and to post that the light bulb has been
changed

14 to share similar experiences of changing light bulbs and how the
light bulb could have been changed differently
7 to caution about the dangers of changing light bulbs

1 to move it to the Lighting section

2 to argue then move it to the Electricals section

7 to point out spelling/grammar errors in posts about changing light bulbs

5 to flame the spell checkers

3 to correct spelling/grammar flames

6 to argue over whether it's "lightbulb" or "light bulb" ... another 6
to condemn those 6 as stupid 2 industry professionals to inform the group that the
proper term is "lamp"

15 know-it-alls who claim they were in the industry, and that "light
bulb" is perfectly correct

19 to post that this forum is not about light bulbs and to please take

this discussion to a lightbulb forum

11 to defend the posting to this forum saying that we all use light
bulbs and therefore the posts are relevant to this forum

36 to debate which method of changing light bulbs is superior, where
to buy the best light bulbs, what brand of light bulbs work best for
this technique and what brands are faulty
7 to post URL's where one can see examples of different light bulbs

4 to post that the URL's were posted incorrectly and then post the
corrected  >URL's

3 to post about links they found from the URL's that are relevant to
this group which makes light bulbs relevant to this group

13 to link all posts to date, quote them in their entirety including
all headers and signatures, and add "Me too"

5 to post to the group that they will no longer post because they
cannot handle the light bulb controversy

4 to say "didn't we go through this already a short time ago?"

13 to say "do a Google search on light bulbs before posting questions
about light bulbs"

1 forum lurker to respond to the original post 6 months from now and
start it all over again.

They forgot one,

1 to say "thank you" for changing the light bulb.


======================================
TIDBITS AND REFLECTIONS~

Subject: disturbing
Date: Wed, 11 Feb 2004 22:37:40 -0600
From: Downey <alckytxn@swbell.net>

http://www.badgerbadgerbadger.com/

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