Modernism ring galore! + Important Modernism desginer

[Spartcom5]

Got some more rings that I haven't gotten around to posting. Again from the same place as most my rings. Most of these are Modernist rings, can't identify some of them unfortunately. However, the one I can identify is amazing. Made by Marcin Zaremski, he loved using amber and sterling. This ring is marked with his stamp and 925, haven't gotten around to contacting Zaremski jewelers directly. The ring has to be 60s. I paid TEN dollars for it and is by far my rarest Modernist ring. It has amber on the top, quite heavy as well. There is one ring on ebay but it is very small honestly not even sure how I'd price my ring but then again I don't really care.... Marcin Zaremski ring | eBay

Brutalist ring, not sure on stone but it is something

 

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[Spartcom5]

Now these rings I can't identify, any help would be great.
Pure silver .999 with maker marks but I don't know what they are

Another amazing Modernist ring and very HEAVY but the maker mark is worn down!! I can make out a g at the end but that's it.

I can identify this ring, 1940s made by Uncas with a crystal. Originally gold plated but it's all worn down so the ring just looks silver now!

An old looking ring with an old looking 925 stamp, not really sure about anything on this ring lol

Maybe a designer ring here, cursive maker's mark. Jane? Something?

Finally a old gold filled ring, another maker mark I don't know.

 

[trdhrdr007]

What makes jewelry brutalist? I've seen the term before but don't know what it means or how to identify pieces.

 

[Spartcom5]

Here is a good definition, "repeated geometric or abstract shapes grouped together asymmetrically and uses rugged, burnished materials with lots of texture & jagged edges." When I was thinking how to explain it myself I was going to say anything that looks jagged/crude objects.
Any help on these marks anyone?

This is the most important but I think it may be impossible.

 

[JimDon]

Sorry can't help on the marks but you have a great source for some really interesting rings. I especially like that Amber one.