www.925-1000.com

I have this necklace that I believe is an antique Arts and Crafts or Art Nouveau piece that I believe is from the early 20th Century. I can not locate any information about it’s hallmark or makers mark. It looks like a buck or a deer and a lowercase e with “o” and “n” inside. Images are attached.

Hello,
The necklace is far more recent than At Nouveau, looks like South American souvenir ware to me.

Hmmm
To me neither the style of this pendant nor the materials or technique look South American. I see amber (a European stone) with an insect inclusion, green jasper and either a moonstone or chalcedony. Also, it would be unusual to have a maker use an antlered stag as a trademark or maker mark as this species of deer isn’t found in South America.
Since we’re speculating wildly, I’d say Eastern Europe for origin.