The coin looks like a poorly cast replica.
There is more than a couple locations in the world lapis can be mined.. https://agta.org/education/gemstones/lapis-lazuli/ The buckle is unmarked...
https://trademark.trademarkia.com/60-tv-73833366.html
Denim lapis is a "trade" name for lapis which has a majority of white calcite in it.Like old faded blue jeans with a lot of bleached white...
There are several here............... http://www.art-amerindien.com/hallmarks/m-american-indian-jewelry-marks.htm
The thread is 6 months old,if the OP decided to do something with it most likely it was taken care of months ago. Since no one knows who made...
You could probably have some one duplicate it for a couple of thousand dollars.
Looks mean little since they make similar designed objects.If an Ojibwa silversmith who was taught the techniques by a Navajo silversmith makes a...
Fish tails move side to side,mammal tails move up and down.
The best lapis has no pyrite or very little.Information.... https://www.gia.edu/lapis-lazuli-quality-factors
Looks like a salmon,the tail is in the wrong direction.
Not sure what the material is,though the cracks in the 2nd photo and a "flake" in the 4th photo near the left rear leg doesn't look like something...
Yes it has color zoning.Whoever faceted the rough stone didn't get the alignment right to flood the stone with full color.It is real amethyst.
The original photos of the stone was too dirty ,take a good photo of the stone,back lite if possible.
What is the maker's mark?
@Couch Potato Wannabe
It was cast,no diamond cut on it.
The wear on the ring means little,I have re-polished stones and cleaned up rings which have had much more wear in as little as 2 years.
Without a maker's mark... it was made sometime in the last 100+ years.
So,it's a die stamped plate soldered to a back plate with acid etched details on the leaves etc.
Separate names with a comma.