@gauntlettgems What size is the stone?
The beads could be a couple hundred years old,were there any Native American settlements in the area?
Looks like a bezel set piece of blue glass.
It's a liver of sulfur patina,usually applied to low area to give depth and contrast on silver and gold at times. [MEDIA]
These African quills appear to be grooved like Marko's photo.https://www.amazon.com/Porcupine-Quills-Indian-Accessories-Fishing/dp/B074NR477W?th=1
They have a large number of choices.,but only one sheath knife listed. https://www.scoutshop.org/knives
Looks like a project out of Woodcraft magazine or other magazines.
The OP hasn't been here in over 2 years,old thread.
How to date a Coke bottle.....https://myweatheredhome.com/dating-old-coca-cola-bottles/
There are a number of Nakai buckles on the net listed as nickel silver,those which are silver are marked sterling.More than 1 Nakai making jewelry.
Federal law states if the piece is not identified by a maker's mark it is not Native American. https://www.doi.gov/iacb/act Over the years...
Without a identified mark it's just another SW design.
Try this......
https://www.hqmc.marines.mil/ousmcc/Units/Marine-Corps-Trademark-Licensing-Program/History/
Antler,but not a length wise slice. It appears to be a burr crown piece. http://www.wildlifetaxidermy.com/antler-burrs.html
#7 looks like a prospectors brooch.https://gem.app/product/vintage-prospectors-pin-brooch-pick-axe-and
Walrus tusk
That's because yours is ivory.
More like mid 20th century than Edwardian.
Looks like ivory.But with just a R it could be difficult to find the person who did the scrimshaw.
Separate names with a comma.