Featured Looking For Info On Various Jewelry

I'll just start with a few at a time. I'm just wondering what kind of stones these are and any information on the older pieces would be greatly appreciated. I'm having a hard time trying to Google them. Hopefully the photos turn out ok.

#1 (The second photo is a close up of the markings on the chain)


#2

#3(on the back there is a birth/death date, 1889-1918. Is there a word for that?)

 

Here's information on the maker of the first piece.

https://www.925-1000.com/mx_victoria_X.html

Debora

 

#1 Possibly for the stone to be amethyst
#2 The large stone is abalone (https://www.google.com/search?q=aba...USJTQIHUxWAOoQ_AUoAnoECBAQBA&biw=1920&bih=969)
#3 For the marking on the bracelet - the "Mexico Silver" mark is seen on pieces from 20's through mid 40's, with a commonly silver standard above .925 purity (https://www.925-1000.com/mexican_marks.html)

 

The design on the charm is a religious symbol for the Eucharist. Would you post a photograph of the back?

Debora