It's a china. Made in Germany. In the 1800's or early 1900's.
I _think_ it's called a "bullseye china", but wait for a second opinion. (I should be better at the antique marble names but they don't stick for me.)
... I'm in a good mood tonight. I think I could learn to like marbles.
I mean, thank you for reminding us of the simple beauty of these orbs we spend so much time pondering.
Hi. Welcome. This site might answer SOME of your questions.
https://www.billes-en-tete.com/liste_billes.php
It is a list of Vacor styles. (Vacor de Mexico)
LOL ... squabble zone?
So civilized to sequester yourself this way.
Yeah ... Blue Lagoon really seems to be the cat's meow these days. Everyone wants to be a Blue Lagoon.
One of the subjects which brings it up is that Masters can have lashes -- and when people realize that it tends to grow their Master collections.
But I thought it would be fun to see how far we could extend the examples -- to Master and beyond.
In the first row, the middle one -- brown -- is a bennington.
The one on the right with light blue splotches and other faint colors is probably also a bennington. It would be called a "fancy bennington".
The rest are not benningtons.
The ball-bearing variety of steelie has a certain charm but pretty much no value. For most collectors the important thing to do with steelies is to make sure they aren't touch marbles they could damage. Probably futile to try to clean it.
The red and yellow is a Vacor machine-made marble. Style name: Red Devil. This page is helpful with Vacors. https://www.billes-en-tete.com/liste_billes.php
I think the other two are contemporary handmades but I wouldn't be able to say who. There are many individuals who have made marbles on a small scale. There are Asian companies whose names we don't know who have mass-produced handmades. Vacor de Mexico had a handmade line called the Atmosphere. There was also a company in England which sold handmades which might have been made there in England -- I can't recall the name or if the marbles were made on site.
Vacor Atmospheres have been popular among collectors but I'm not sure how easy it would be to confirm you had one without the packaging. That said, the second marble looks to me like it could be an Atmosphere.
Here is a 12-year-old thread with some pictures of Atmospheres: https://marbleconnection.com/topic/6433-show-your-atmospheres/
If the green is an inch and a half (in diameter?), then I am probably wrong about it being Vitro. One inch or below could be Vitro.
Over one inch is an indication of Vacor. Also, yes, the texture on the white one and yellow one is a big clue.