Interesting. What metals do they alloy with the platinum? Or rather, which alloys are attracted to the magnet?
Looks to me as though the head may also be a separate piece?
Are we talking about these? [IMG] I looked at the thread & all your photos of them. The closeups clearly show chisel/file marks. None of the...
The only thing a magnet tests is whether or not a metal is ferrous, iron containing.
Suspect it was Laura who bent it to its current shape. A monogram is a single initial or 2 - 3 initials combined into one. Will this stand on...
A piece like the one I showed is molded. That's sort of the point of plastics, you can shape them in less laborious ways than are required for...
Celluloid is more likely to be used to mimic ivory & is very light in weight: [ATTACH]
It's not Celluloid. The generic term used, sounds a bit better than plastic, is 'resin'. The cameo itself could have been made any time from the...
I think that is precisely the answer. A bit like the way you'll see a sign saying the upcoming stretch of highway is sponsored by some company....
Your cameo is far nicer, but this is from the same period. Both definitely have a mid- to late 1970s look: [IMG]
Add a vote for smokey quartz. https://www.gemselect.com/other-info/smoky-topaz-quartz.php This was just the first, simple write up of the...
[ATTACH]
You're not President of Ukraine, by any chance? Welcome, David. :)
See: https://www.antiquers.com/threads/double-walrus-pen-holder-carved-ivory.37899/
If we locate something similar, we may find the stone (incorrectly) termed onyx, as these elements were: [IMG]
I wouldn't rely on that; it often is. E.g.,...
I'm with INH: are we looking for lamps that are brass & marble or other stone, or, as looks possible from here, brass & ivory?
I tried looking, but maybe you can get more out of this site because you will do better with search terms:...
The lore of these is so complex & we are so lucky to have someone on board who can give us a bit of an initiation. :)
There are two different stones known commonly as alabaster, both based on calcium. One is related to gypsum; the other to calcite (travertine is...
Separate names with a comma.
