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LAPIDARY ARTS and FACETERS DIGEST
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Issue No. 89 - Wednesday March 19, 2003
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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

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VISIT OUR WEBSITE TODAY

http://www.gemcutters.org
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From the Moderator: 

Topical Focus for This Week:

GARNET and DARK STONE CLINIC

HOMEWORK for  tonight:

For each night this week, put on your thinking caps and share your experiences,
pains and pleasures in cutting Deeply colored Garnet and other Deeply
saturated stones.

Consider the following while you compile your responses.

1. Cutting garnet and other stones in the various color saturations

2. Intent:  cutting "bright and lively" stones, from rough that reaches
50% saturation (white paper test limit), or darker.

3. How approaching or exceeding the critical angle, or other parameters, might
help accomplish this.

4. Known cuts that perform well in darker garnet rough.


Phil in Florida submitted this topic for the first of a new series of week
long topical "clinics"  or group "brainstorming sessions".

_______

Hi all,  Our focus topic has be quite active. We still have 2
day's left for this week's topic so get your post in today.

Next week's topic will be announced in Thursday's Digest.

Thurmond
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Index to Today's Digest

01  BIO:Kecia Parmakian
02  RE: Garnet and Dark Stone Clinic
03  RE: Garnet and Dark Stone Clinic
04  RE: Garnet and Dark Stone Clinic

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Message:01

Subject: BIO:Kecia Parmakian
Date: Tue, 18 Mar 2003 14:23:46 -0700
To: "Thurmond Moore, Lapidary Digest" <lapidary@caprock-spur.com>
From: "LIN PARMAKIAN" <PARMAKIAN@worldnet.att.net>

Bio:Kecia Parmakian.
    I am a faceter, I have been cutting stones for 11 years on and off.
I have been using a Graves Faceting Machine that I inherited from my
mother-in-law. I had no idea how to use this machine when I first got
it, I read the instruction book, but it was a whole new language. I
finally found a wonderful gent who took me under his wing and taught me
how to facet. I was hooked. I have taken several jewelry classes and I
have to say, I am far more comfortable with stones than with gold or
silver. I love to cut just about anything, though I haven't cut any
corundum.

_____

Hi Kecia,  Welcome to the group. I think you will find many helpful gemcutters
here. Please feel free to share your cutting experiences with the list as well as
posting for help when needed.

Thurmond
__________________________________________________________
Message:02

Subject: Garnets and Multiple reflections
Date: Tue, 18 Mar 2003 17:22:33 -0800 (PST)
To: LapidaryArtsDigest <lapidary@caprock-spur.com>
From: Dave Thompson <djt@irastro.caltech.edu>

Hi Phil,

> ...the number of bounces _directly_ determines the total
> path length of the light ray in a cut gem...

I agree.  Multiple (>2) internal reflections can
increase the path length through the stone.  My point was
that it is the path length and not the reflections which
are causing the extinction of light.

Dave (Pasadena, Ca).


_______

Hi Dave, My original comment about number of bounces
was intended to be a reference to path length through the stone. I just
did not state it correctly.

Thurmond

__________________________________________________________
Message:03

Subject: Re:Dark Stone Clinic
Date: Wed, 19 Mar 2003 09:59:03 -0500
To: faceters@caprock-spur.com
From: mskelly <mskelly@gte.net>

Hello the List:
Reference Phil Stonebrook's inquiry as to whether Jim Perkins would care
to share the cutting instructions for the Derek cut.
Reference also two photographs of the Derek cut at
http://www.the-gemmery.com/temporary/Garnets.htm
Jim notes that the cutting instructions can be found at
http://www.rockhounds.com/rockshop/gem_designs/derek/
They can also be found in Volume 1 of the Greensboro Faceters Calendar and
in his Book 1 of faceting designs available from
www.facetingmachines.com
I've cut several of Jim's designs and like them.
Regards,
mike in sunny, breezy Florida

__________________________________________________________
Message:04

Subject: Dark Garnet
Date: Wed, 19 Mar 2003 19:19:20 -0000
To: "LapidaryArtsDigest" <faceters@caprock-spur.com>
From: "Gustavo Castelblanco" <mail@montana78.freeserve.co.uk>

Hi Everyone,

I have been working on some designs for garnets with strong colour
saturation. I have always preferred to cut a small amount of facets in
the pavilion as I prefer the results I had achieved that way.

If you would like to have a look at the designs please go to Dan =
Clayton's site http://gems.dnsart.com/modules/newbb/
You can mix and match pavilions and crowns with these designs. I will
cut Lighting Hope and will send a picture of the rough and the finished
stone.

I would like to thank Dan Clayton for all his valuable advise and help.
He kindly put the designs on his web site, making them available for
everybody.

I hope some of you have a go at cutting one of the designs and let me
know what you think about the results.

Regards,

Gustavo.


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

Kids at the Wedding
At a friend's wedding, everything went smoothly until it
was time for the flower girl and her young escort to come
down the aisle.

The boy stopped at every pew, growling at the guests.
When asked afterward why he behaved so badly, he
explained, "I was just trying to be a good ring bear."

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REFLECTIONS AND TIDBITS:

" Great endeavors are inseparable from great risks."

--- Author Unknown ---

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CLASSIFIED ADVERTISEMENTS:


From: "RICHARD P ROSENTHAL" <kenaii@earthlink.net>

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China. Contact Kenaii@earthlink.net I do have Carving and Gem grade
Green Nephrite Jade from Siberia for sale.

03072003
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Get a FREE copy of the 2003 Faceter's Engagement Calendar
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Rough to Cut
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