LAPIDARY ARTS and FACETERS DIGEST
Issue No.71 - Friday February 21, 2003
Moderated by: Thurmond Moore III
Committed to carrying on the fine works of
Hale Sweeny and Jerry Dewbre
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From the Moderator: Hi everyone, Short list
today. Enjoy your weekend.
Index to Today's Digest
01 RE: Jade polishing issues
02 RE: Jade polishing issues
03 RE: Jade polishing issues
04 RE: Opals
05 Re: Issue No.69 - Ultra Tec Depth of Cut Indicators
Subject: Polishing Jade
Date: Thu, 20 Feb 2003 12:53:48 -0600
From: "Henry Swan" <firstname.lastname@example.org>
I do a lot of jade polishing and I have not found anything that beats chrome
oxide. It is available from most any lapidary supply. I use it on a elk hide
leather glued to the polish disk on the end of my Genie. Make a fairly thick
slurry in a small container (about like syrup) use a small piece of wet sponge
to apply to the wheel after spraying the disk with water. Polish evenly, you
will find that the polish comes in much like opal, when the wheel and stone
are almost dry. Many people think of Jade as being very hard, but it is not.
It is very tough. Because of the crystal structure (interwoven threads) (and
some inclusions), being contacted differently this causes the undercutting. Do
not let the stone or wheel get too dry or you will have two problems. One is
you may burn the stone (white spot or worse) and you may inhale some chrome
dust. This is very bad for you. It does not lead to being an old lapidary! (Or
at least not much older!) This method works well on all jade except for the
Blue California Jade. I have not found anything that really works as well as I
would like on the blue jade.This works for me and I am sure that there will be
others that will have their favorite method of polishing jade. See what works
Hank Swan, in sunny Corpus Christi, looking for 74 today, and golf wether
weekend coming up!
Subject: Nephrite Jade polishing
Date: Thu, 20 Feb 2003 19:16:52 +0000
I have found that the only way to polish almost any jade without the orange
peel is to first pre-polish using 14K diamond at a fairly moderate speed. You
must continue to pre-polish until all signs of peel are gone. Finally, do is
finish polish using a good felt pad and either 50K or 100K diamond at a very
low speed and with a good deal of extender to keep things cool. Do not press
too hard or the peel may come back.
Subject: Polishing nephrite jade
Date: Thu, 20 Feb 2003 22:20:36 +0000
From: "Keith Torckler" <email@example.com>
Undercutting on nephrite flats can be a problem caused by a variety of
reasons... Quality of the stone for one, if the structure of the stone is
tightly felted you should be able to overcome the problem... Another cause
can be the direction in which the stone had been slabbed, cut across the
grain or along the grain, the latter will definitely give that sort of
problem on some stone.
Sand the stone dry on silicon carbide wet or dry, if you sand wet it will
undercut, at 600 grit the stone should have an almost acceptable polish, be
careful not to overheat or you may get white burn marks.
I would polish on a hard leather disc with tin oxide or you could use a lap
or very hard leather disc with diamond paste, should have a pretty good
finish by about 8000 and take it on to 50,000 or 100,000 if it helps.
This system (not the diamond) is used by all the jade jewellery
manufacturers in New Zealand.
I personally use both, using the tin oxide on easy to get at parts of
carvings and the diamond on other areas.
Good luck, Keith Torckler, Cornwallis, New Zealand
Subject: Re: Issue No.67 - Monday February 17, 2003
Date: Thu, 20 Feb 2003 22:00:47 -0500
To: firstname.lastname@example.org (LapidaryArtsDigest)
From: Donald Allen <email@example.com>
RE: Message:01 Mon Feb 17, 2003
Date: Sat, 15 Feb 2003 11:12:01 -0600
To: "LapidaryArtsDigest" <firstname.lastname@example.org>
From: "Vernon Matthews" <email@example.com>
For Bill.......the opal expert.
In general, do you think it best to cut an irregular shaped piece of
rough into an irregular shaped cab,, or sacrifice some of the material
to get a perfectly shaped standard sized cab? I realize that it
depends greatly on what you're going to use it in, but just in
general.........considering only the stone.........which do you think is
the more sensible route??
Bunker Hill , Illinois
It depends on what you're planning to do with the cab. If you're
planning on selling it to those who are capable of desigining and making
their own settings The freeform shape would not put them off and may
enhance the ability to sell it ( as it makes it, " More unique " ). If
you're trying to sell it to a more mainstream jewelry store, Their usual
course is to use a calibrated mountings. If you're not sure, cut it
freeform at 1st and if you can't sell it that way, recut it to a
Subject: Re: Issue No.69 - Ultra Tec Depth of Cut Indicators
Date: Thu, 20 Feb 2003 22:47:27 -0500 (EST)
To: firstname.lastname@example.org (LapidaryArtsDigest)
From: DaveWoolley@webtv.net (Dave Woolley)
Thanks for your endorsement of the Beale/Woolley Depth of Cut Indicator.
However, any Indicator is better than no indicator.
RESOURCES FOR LAPIDARIES:
LAPIDARY ARTS and FACETERS DIGEST PERSONALS:
Lurking is fine, but participation is better for learning ! Get involved!!
TODAY'S FUNNY ~
These are from actual resumes:
"Personal: I'm married with 9 children. I don't require
"I am extremely loyal to my present firm, so please don't
let them know of my immediate availability."
"Qualifications: I am a man filled with passion and integrity,
and I can act on short notice. I'm a class act and do not come cheap."
"I intentionally omitted my salary history. I've made money
and lost money. I've been rich and I've been poor. I prefer being rich."
"Note: Please don't misconstrue my 14 jobs as 'job-hopping'.
I have never quit a job."
"Number of dependents: 40."
"Marital Status: Often. Children: Various."
"Here are my qualifications for you to overlook."
REASONS FOR LEAVING THE LAST JOB:
"Responsibility makes me nervous."
"They insisted that all employees get to work by 8:45 every
morning. Couldn't work under those conditions."
REASONS FOR LEAVING MY LAST JOB:
"Was met with a string of broken promises and lies, as well
"I was working for my mom until she decided to move."
"The company made me a scapegoat - just like my three
"While I am open to the initial nature of an assignment, I am
decidedly disposed that it be so oriented as to at least partially
incorporate the experience enjoyed heretofore and that it be
configured so as to ultimately lead to the application of more
rarefied facets of financial management as the major sphere
"I was proud to win the Gregg Typting Award."
SPECIAL REQUESTS & JOB OBJECTIVES:
"Please call me after 5:30 because I am self-employed and my
employer does not know I am looking for another job."
"My goal is to be a meteorologist. But since I have no training
in meteorology, I suppose I should try stock brokerage."
"I procrastinate - especially when the task is unpleasant."
"Minor allergies to house cats and Mongolian sheep."
"Donating blood. 14 gallons so far."
SMALL TYPOS THAT CAN CHANGE THE MEANING:
"Education: College, August 1880-May 1984."
"Work Experience: Dealing with customers' conflicts that arouse."
"Develop and recommend an annual operating expense fudget."
"I'm a rabid typist."
"Instrumental in ruining entire operation for a Midwest chain operation."
REFLECTIONS AND TIDBITS:
" It is better to not have something and deserve
it, rather than have something and not deserve it!"
--- Author Unknown ---
Facet Rough for sale.
Been doing some house cleaning and I decided to offer these two parcels
of Rhodolite Garnet facet rough for sale. I have more rough than I'll
ever cut. Both are nice clean parcels. I have pics on request.
One parcel has 44 pieces, total weight of 328.84cts. Smallest stone
4.17cts and the largest 10.96cts.
Second parcel has 38 pcs., total weight of 217.11cts.
Smallest stone 2.96cts and largest 11.98cts.
Dan Snyder email@example.com
The Lubbock Gem and Mineral Society is looking for 2 more vendors
for our Spring Show at the Lubbock Civic Center May 17th and 18th.
Setup day for the show is Friday May 16, 2003. If you are a vendor and
would like more information concerning the show please call Ed Ries at
Subject: Subject add
Date: Thu, 6 Feb 2003 15:47:26 -0500
From: "RICHARD P ROSENTHAL" <firstname.lastname@example.org>
Date Febuary 6th /03
Green Siberian Nephrite Jade
Carving ,Sculpture Grade, Some Black Spots, Ten dollars a pound up to
fifty pound pieces.
Jewelry grade, Green with Green chrome spots, Superior Transluscense and
Color, Fifty dollars per pound
Please contact Kenaii@earthlink.net or check the material out at
Rough to Cut
If you're looking for quality facet rough please check out Rough to Cut,
http://www.roughtocut.com. We offer a wide range of quality facet rough
from Aquamarine to Zircon. Large selections in stock currently of Beryl,
Garnets & Tourmalines. Please check us out & when you do, why not give a
try to our contest, you could win a 5ct + piece of Spessartite garnet
Rough to Cut
AVAILABLE FOR SALE
Honey, red & brown zircons, 10g parcels @$20/parcel
Red Garnet $8/g, eye clean-slightly included
Spessartine Garnet $7.50/g, slight-moderately included
Malaya Garnet $6/g, good eye clean roughs
Tunduri Garnet $10/g, eye clean-slightly included
Pink Tourmaline $20/g, eye clean-slightly included
Red Tourmaline $10/g, slight-moderately included
Bicolor Tourmaline $15/g, eye clean
Watermelon Tourmaline $20/g eye clean
Green/Green Blue Tourmaline $10/g, eye clean roughs
Blue, Green & Blue/Green Sapphires $35/g, eye clean-slightly included, up to 1g.
Blue Beryl (Aquamarine) $6/g, eye clean-slightly included crystals
Green Beryl (Emerald) $10-$50/g, eye clean-slightly included crystals, zoned green
Cabbing Grade Aquamarine $3/g
Complete online discount catalog for cabbing and faceting machines, wheels,
laps, polishes, diamond saws, diamond blades, and general lapidary supplies
Solid copper laps 1/4 thick 8" and 6" you can charge both sides with
diamond. Other laps too !! http://www.jewelersgems.com
NOW ONLINE! RRGaetan Gem Rough - Featuring excellent, facet-grade,
Colombian Emerald rough! PLUS, Chrome Tourmaline, Achroite Tourmaline,
Golden Chrome Tourmaline, Aquamarine, Spess, Mint and Malaya Garnets,
and more! For photos and more information, visit us at rrgaetan.com.
LIST and WEBSITE INFO~
LAPIDARY ARTS and FACETERS DIGEST
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