Silver and Marcassite necklace

I got this necklace for my 31 th birthday this year from my mom.
We visited an auction a few weeks befor my bday and I saw this necklace that I liked and a few rings.
Since the actual bidding happened on a day I had to work, I told her which items I wanted and how much I was prepared to pay.
She actually did win some rings for me, and she got me this one for my birthday.
Isnt that nice?
Its a silver and marcassite necklace, I g it guess it dates from the turn of the century.
It misses one tiny marcassite (on the left, first picture). Maybe I will replace it someday but you almost cant see it.
The unusual thing is: my husband got me a matching brooch! And he never knew my mother was giving me this necklace.
Great minds think alike.
And how lucky I am with my family who loves me that much.