Recently I purchased a man's solitaire ring that was supposed to be
solid Platinum. The price reflected this fact and it was purchased from
a reputable jewelry store. They had to order the blank and then set the
diamond I bought. It is a beautiful ring. I "accidentally" was playing
with a magnet and wow! it stuck to the ring. I was not aware of platinum
having magnetic properties so I wanted to ask the group if anyone had
any information on the properties of platinum. I know gold and silver
are non-magnetic.

Sincerely,
Bill Kehm

Bill Kehm wrote:
Recently I purchased a man's solitaire ring that was supposed to be
solid Platinum. The price reflected this fact and it was purchased from
a reputable jewelry store. They had to order the blank and then set the
diamond I bought. It is a beautiful ring. I "accidentally" was playing
with a magnet and wow! it stuck to the ring. I was not aware of platinum
having magnetic properties so I wanted to ask the group if anyone had
any information on the properties of platinum. I know gold and silver
are non-magnetic.

Sincerely,
Bill Kehm

If I remember correctly, the only magnetic metals are iron, steel,
cobalt, and nickel.
Randy

On Jan 18, 9:05 am, Randy Replogle wrote:
Bill Kehm wrote:
Recently I purchased a man's solitaire ring that was supposed to be
solid Platinum. The price reflected this fact and it was purchased from
a reputable jewelry store. They had to order the blank and then set the
diamond I bought. It is a beautiful ring. I "accidentally" was playing
with a magnet and wow! it stuck to the ring. I was not aware of platinum
having magnetic properties so I wanted to ask the group if anyone had
any information on the properties of platinum. I know gold and silver
are non-magnetic.

Sincerely,
Bill Kehm

If I remember correctly, the only magnetic metals are iron, steel,
cobalt, and nickel.
Randy

Almost all materials have some magnetic property. They are either
attracted to, or repelled by, magnets. The effect is ordinarily too
small to notice, however. The very large response of iron, cobalt,
nickel and a few compounds, is known as ferromagnetism, or the
materials are called ferromagnetic.

On Jan 18, 9:48 am, Bill Kehm wrote:
Recently I purchased a man's solitaire ring that was supposed to be
solid Platinum. The price reflected this fact and it was purchased from
a reputable jewelry store. They had to order the blank and then set the
diamond I bought. It is a beautiful ring. I "accidentally" was playing
with a magnet and wow! it stuck to the ring. I was not aware of platinum
having magnetic properties so I wanted to ask the group if anyone had
any information on the properties of platinum. I know gold and silver
are non-magnetic.

Sincerely,
Bill Kehm


Page on this from 'ask a scientist'
http://www.newton.dep.anl.gov/askasc...0/phy00556.htm

and a patent-
http://www.freepatentsonline.com/6869567.html

Looks like the ring is an alloy with nickel or iron, or the ring is
platinum plated.

If it was not specified that it would be pure platinum, it would
probably be considered 'normal' to receive an alloy, but I have no
idea what % platinum it 'should' be. (I'm talking out my ass a bit,
but that's the way things seem to work in the jewelry world).

Dave

On Jan 18, 10:20 am, wrote:
On Jan 18, 9:48 am, Bill Kehm wrote:

Recently I purchased a man's solitaire ring that was supposed to be
solid Platinum. The price reflected this fact and it was purchased from
a reputable jewelry store. They had to order the blank and then set the
diamond I bought. It is a beautiful ring. I "accidentally" was playing
with a magnet and wow! it stuck to the ring. I was not aware of platinum
having magnetic properties so I wanted to ask the group if anyone had
any information on the properties of platinum. I know gold and silver
are non-magnetic.

Sincerely,
Bill Kehm

Page on this from 'ask a scientist'http://www.newton.dep.anl.gov/askasci/phy00/phy00556.htm

and a patent-http://www.freepatentsonline.com/6869567.html

Looks like the ring is an alloy with nickel or iron, or the ring is
platinum plated.

If it was not specified that it would be pure platinum, it would
probably be considered 'normal' to receive an alloy, but I have no
idea what % platinum it 'should' be. (I'm talking out my ass a bit,
but that's the way things seem to work in the jewelry world).

Dave


Wow, lotsa stuff on this out there- try googling "platinum alloy"
jewelry

http://www.ganoksin.com/borisat/nena...inum-alloy.htm

FTC Regulations for Quality-marking of Platinum
Effective immediately, the FTC Platinum Guide for marking jewelry made
wholly or in part of platinum provides that items consisting of:

950 parts or more per thousand of pure platinum can be marked
"Platinum" without the use of any qualifying statements;

850 to 950 parts per thousand can be marked in accordance with
international standards of "950 Plat." or "950 Pt."; or "900 Plat." or
"900 Pt."; "850 Plat." or "850 Pt." (the revised guide permits the use
of a two or four letter abbreviation for platinum);

500 parts per thousand of pure platinum and at least 950 parts per
thousand platinum group metals can be marked with the part per
thousand of pure platinum, followed by the parts per thousand of each
platinum group metal example: 600Plat350Irid" or "600Pt350Ir";

less than 500 parts per thousand pure platinum cannot be marked with
the word platinum or any abbreviation thereof.


http://www.post-gazette.com/pg/06159/696735-314.stm

Cheaper platinum alloy emerges as a look-alike choice
Thursday, June 08, 2006
By Sara Schaefer Munoz, The Wall Street Journal

A debate is roiling the jewelry industry. The controversy -- which has
drawn in the Federal Trade Commission, Vogue magazine, and even some
bridegrooms-to-be -- is whether a ring containing little more than 58
percent platinum can still be called a platinum ring.

The white luster of platinum has become the chic look in engagement
rings and wedding bands in recent years. Industry marketing helped
build its cachet as a metal that wears well and has a less gaudy
appearance than gold. But high prices are taking a toll on demand.
Now, manufacturers have created a less expensive alloy that mixes
platinum with nonprecious metals, and jewelers are rolling it out in
as many as 400 stores across the country.

The makers of the new alloy, known as 585 platinum for its 58.5
percent platinum content, say it looks like the real thing and is just
as durable but is around half the price. One men's wedding band in the
new alloy from jewelry maker Wright & Lato Inc. has a suggested retail
price of $1,070, compared with $2,370 for a platinum version.
Proponents of the new alloy say the only major difference is that it's
about 30 percent lighter than platinum.

But many makers and sellers of platinum jewelry say pieces should not
bear the word platinum if they are less than 85 percent platinum...


D

"Bill Kehm" wrote in message
...
Recently I purchased a man's solitaire ring that was supposed to be solid
Platinum. The price reflected this fact and it was purchased from a
reputable jewelry store. They had to order the blank and then set the
diamond I bought. It is a beautiful ring. I "accidentally" was playing
with a magnet and wow! it stuck to the ring. I was not aware of platinum
having magnetic properties so I wanted to ask the group if anyone had any
information on the properties of platinum. I know gold and silver are
non-magnetic.

Sincerely,
Bill Kehm

The traditional jewelry platinum alloys contain 5-10% iridium and are not
magnetic. However, because of their enormous surface tension, they do not
cast well in intricate molds.

In modern times, jewelry manufacturers relies heavily on casting technology
to produce products in a cost effective manner. To address this, they
developed a platinum alloy containing 5% cobalt instead of the iridium. This
alloy is slightly magnetic.

Paul K. Dickman

On Jan 18, 6:48 am, Bill Kehm wrote:
Recently I purchased a man's solitaire ring that was supposed to be
solid Platinum. The price reflected this fact and it was purchased from
a reputable jewelry store. They had to order the blank and then set the
diamond I bought. It is a beautiful ring. I "accidentally" was playing
with a magnet and wow! it stuck to the ring. I was not aware of platinum
having magnetic properties so I wanted to ask the group if anyone had
any information on the properties of platinum. I know gold and silver
are non-magnetic.

Sincerely,
Bill Kehm

I just checked some platinum wire and screen with a REALLY strong
magnet and no attraction whatsoever. My platinum came from a gas
reaction chamber used in an old auto emissions test machine.

I think I would go talk to your jeweler. I think platinum is up over
$2,000 per ounce, so what did you pay?

Paul

According to wikipedia, platinum is paramagentic; this means it is
weakly attracted to magnets, but can't be magnetized. They also say
it "typically requires a sensitive analytical balance to detect the
effect."

One thing - what magnet - likely a strong one that has become common.

The other is any ring brought into a magnetic field will conduct current.
(like a motor) - when it does, it generates a field and interacts with
the magnet. The magnet is stronger by far than the electromagnetic therefore
it wins.

I would consider you take it to another store and verify if you have questions.
Martin

Martin H. Eastburn
@ home at Lions' Lair with our computer lionslair at consolidated dot net
TSRA, Endowed; NRA LOH & Patron Member, Golden Eagle, Patriot's Medal.
NRA Second Amendment Task Force Charter Founder
IHMSA and NRA Metallic Silhouette maker & member.
http://lufkinced.com/


Bill Kehm wrote:
Recently I purchased a man's solitaire ring that was supposed to be
solid Platinum. The price reflected this fact and it was purchased from
a reputable jewelry store. They had to order the blank and then set the
diamond I bought. It is a beautiful ring. I "accidentally" was playing
with a magnet and wow! it stuck to the ring. I was not aware of platinum
having magnetic properties so I wanted to ask the group if anyone had
any information on the properties of platinum. I know gold and silver
are non-magnetic.

Sincerely,
Bill Kehm

"Martin H. Eastburn" wrote in message
...
One thing - what magnet - likely a strong one that has become common.


In this case, magnet strength isn't that important. The Platinum-Cobalt
alloy is noticably attracted to even refrigerator magnets.

It is magnetic enough, that the time honored practice of using a magnet to
remove iron contamination from your bench filings is ill advised. If you use
this alloy, you will be throwing away a five spot every time the magnet
passes over your sweeps tray.

Paul K. Dickman



The other is any ring brought into a magnetic field will conduct current.
(like a motor) - when it does, it generates a field and interacts with
the magnet. The magnet is stronger by far than the electromagnetic
therefore
it wins.

I would consider you take it to another store and verify if you have
questions.
Martin

Martin H. Eastburn

Martin H. Eastburn wrote:
...
The other is any ring brought into a magnetic field will conduct current.
...

Only while the ring is moving in the magnetic field. Bob

Right - cutting lines of force.

Ever hold a ring still in a hand and the body with it ?

Ever shoot a rifle at 500 yards and see the heart beat ?

The ring is moving if held. The magnet is moving if held.
If both are held - there can be complex movement.

Martin
Martin H. Eastburn
@ home at Lions' Lair with our computer lionslair at consolidated dot net
TSRA, Endowed; NRA LOH & Patron Member, Golden Eagle, Patriot's Medal.
NRA Second Amendment Task Force Charter Founder
IHMSA and NRA Metallic Silhouette maker & member.
http://lufkinced.com/


Bob Engelhardt wrote:
Martin H. Eastburn wrote:
...
The other is any ring brought into a magnetic field will conduct current.
...

Only while the ring is moving in the magnetic field. Bob