Vintage Handmade Silver Cuff Link and Suit-Coat Clip Set from Israel

This is a vintage set of handmade Cuff links and suit-coat clip. The packaging says ¨Souvenir from Israel¨ It looks to never have been used and is in great condition. They have silver backings and look to be some kind of black crystal with a green crystal embedded into it. Maye fluorite on obsidian? It is a beautiful unique design. It looks to never have been used and it is in its original packaging.