They are consistent with many faceted German Baltic amber beads from the late 19th/early 20th Cs. I own some myself.

However, amber cannot be authenticated from a photo (with rather few exceptions). You need to perform simple tests to verify what you have. I recommend, in this sequence, the rub test, the brine text, and the hot-point test.

You can read all about these tests at my Group. (See below.) Also, past discussions here.

I hope this is helpful. Jamey