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Plasticizing silver and stone jewelry


#1

I don’t know about plasticizing, but you can try coating it with
ProtectaClear from http://www.ganoksin.com/gnkurl/1lm

Thank you for the web site for metal/jewelry coating (and polisher I
expect). It sounds like the supplier expects this to prevent any
oxidation in stone and metal. Also it would be good for preventing
scratches, eg on a nice Al kitchenware serving tray I have. I can see
why Al was once more highly prized than gold - or so I have read. I
may also try it on a pure silver bar. Plastics in the kitchen are
sometimes porous so I thought the oxidation might proceed right
through the coating.

The other day I was in “Martha’s Store” (Home Depot) looking at
beautiful stone countertops. The gloss is highly variable and I could
not tell if they were plasticized. Does anyone have an opinion?

I do not have the means to test all “dimension stones” as they call
them in BC laws for final appearance after polishing. But I use three
cheap and easy tests now: plasticizing, linseed oil, and plain old
water. Does anyone else have another quick and easy test?

Also does anyone use a robotic arm or any kind of “robojeweller” to
polish stone and metal?

PS - Speaking of oxidation, remember the BBC video on an Englishman
named “Jem” who made diamonds with a 1500 degree (F I guess)
acetyline torch? Now what was that wise Olde English saying about not
being able to polish poop? Maybe he started out with C from dinodirt
paleosoil. He got lots of sparkle which is as good as polish. Charles
is already thinking of the huge export market for dinodirt - could be
the biggest thing for the Oz economy since Argyle. Dinodirt is
Forever!

Would that not have been an anoxic part of the flame (oxygen would
just produce CO2)? And what is the guess about the composition of the
heat-resistant plate under the diamonds?

What’s in a name? The only all-electric car I ever drove was built
15 years ago by a Vancouver mechanic named “Axel”. I correspond on a
BC mining list with a diamond driller named “Rod”.


#2

The diamond on the metal sheet were formed at 1500 deg C by
sublimation. The metal sheet is platinum and it takes about 24hours
to get anything so the shiny bit you see is the platinum sheet. The
diamond forms on the inner edge of the soot deposit and are too small
to scatter light to give a sparkle. Aluminium was once more valuable
than platinum. This was because Al was rare as a metal an platinum
was virtually useless until the production of acetylene. The date
would have been around 1820 to own an Al tray and make your fortune.
Coating an Al tray with a plastic resist wont stop it oxidising- the
surface will have oxidised anyway on contact with air when it was
made but a protective coating reduces the corrosion to Al hydroxide
when in contact with water or salt solutions.

This applies to pure silver. The oxidation rate is so slow in a
normal atmosphere that a coating of plastic isnt going to make any
appreciable difference. Surfacwe preparation and polish are the key
things on keeping it bright. The countertops will be polished stone
if they feel cold to the touch or maybe a composite if they feel
warm. A coating would not last long in a working environment.

Robotic arms are used for polishing metals and stone but not in the
jewellery field ( havent seen inside the big CZ cutting factories so
cant say what they use)so if you want one you will have to design
and build yourself. It then becomes a matter of cost versus benefit-
will it be cost effective for your project? I used to use automated
polisher for samples for micrography but you wouldnt call it
robotics as it is merely an automated machine with timers and stop
sensors (optical and mechanical) to finish a stage of a process and
then you had to move on to the next stage, often using another piece
of equipment.

Finally all carbon comes from the same source in this solar
system-the sun. On earth where it ends up is part of the earth’s
carbon cycle and some of it is recycled in a matter of hours and some
takes a billion years or more. Acetylene is generated by adding water
to calcium carbide and that doesnt come from dinosaur coprolites. So,
if you want to make diamonds from poo, you have to go down the high
pressure/temp route.

Nick Royall


#3

Nick says “all carbon comes from the same source in this solar
system-the sun” but maybe he got that from the Druids at Stonehenge
(which I have visited three times). If all C is solar-inorganic in
origin what about those long C chains?

When we find them in space, what do we say about their origin? I
used to enjoy Lexx which was a UK series, so maybe Nick saw it. I
theorized that organic molecules in space are fossil fuels
(excretions, secretions and assorted gunk) from giant space bugs
turned into space ships like Lexx…

which puts another spin on the previous thread re inorganic and
organic hydrocarbon fuels.

UK tv (like Dr Who, Amanda Tapping and Mr Bean) also inspired my
research in exoproctogemology. What is gemology on and off planet but
"Imagination at Work" (GE slogan)?

Perhaps the British sages are right that because that is what the
fortune cooky said when I last visited a Chinese restuarant here but
as “Jem” disclosed in that BBC video, a rose by any other name would
still produce C -> shiny diamonds when taken in as fuel and then
blasted out the tail pipe of Lexx with an oxy-acetyline mix.


#4

In the cosmological approach to the universe, all elements, carbon
included come from stars (the sun is one). What happens chemically
after the element is produced is another entire subject. Thus, yes,
the original carbon that is in what we humans have classified as
organic came from the inorganic stars.

John
John Atwell Rasmussen, Ph.D., AJP
http://rasmussengems.ganoksin.com/blogs/


#5

Peter,

you are confusing the earth’s C cycle with atomic fusion. Organic
molecules are just that-organic MOLECULES. They are made partially
of carbon but the C source is ultimately one source-the sun (you can
be picky and look at radioactive decay but the larger atoms that are
disintegrating were all fused in the same way in the first place).
You can recycle all elements almost infinitely. Interestingly about
20kg of sunshine hits the earth every day, which is about the same as
the mass of the earth lost to space by radiation. Isostasy via E=MC2

When you find it in space you say that it comes from the same
source-stars (such as the sun) or possibly residual matter from the
big bang (which created matter from energy) so MC2E. You can
certainly turn sht into fuel just as you can turn fuel into sht.
By the way, The television programmes mentioned are all science
FICTION and aimed predominantly at children.

GE may use the tag line “imagination at work” but I bet they wouldnt
be happy to have it expropriated in such an inappropriate way.

Looking forward to seeing your creations in the high end chain stores
as an alternative to gold and diamond rings

Nick Royall