Sizing guide for bangle bracelets.... https://www.duelonjewel.com/pages/sizing-guide-for-bangles-and-bangle-bracelets
A number of modern NA silversmiths now use commercially made stamps and the 925 mark.
Here is one ,they are calling it Southwestern..... https://stoneandfeatherdesigns.com/products/signed-dt-southwestern-sterling-bracelet
Looks like glue from the stand.
Looks like seashell.
Looks like an Asian top piece/head for a walking stick, see example......
If the price on the tag is correct,the price of the bracelet is $2.75.
You can check Hugo Kohl,he has been in business for many years.... https://hugokohl.com/
It looks like it was poorly cast with surface bubbles and full of porosity,I'm surprised it wasn't tossed into the scrap bin and not "sold".
Take some good photos when you receive the piece,I would not say the piece is "costume" until the metal has been checked for purity. It appears to...
The bottom right stone looks like botryoidal agate.
We collect rocks where ever we travel,Southern Washington carnelian. [ATTACH] [ATTACH]
Take a look at a color chart........
[ATTACH] North Carolina rhodolite garnet can be purple.
Gold nugget purity in the USA.... https://www.treasuresauctions.com.au/learn/blog/gold-nuggets-pure-gold
If the ring was made to sell,a smart person would have put it into the scrap bin and started over.It is full of porosity which makes the structure...
Looks like air bubbles or solder balls.
All of the quartz stones will test in the quartz/citrine level on the tester. Amethyst,citrine,smoky,clear,prasiolite/green,etc. The vast majority...
Citrine is quartz.
Natural hematite is not magnetic.
Separate names with a comma.
