Black tourmaline ring

https://en.gabilo.com/kamni/turmalin/

18K yellow gold unisex ring with natural Schorl Black Tourmaline
tourmaline origin - Madagascar
stone weight - 16.25 carats
stone measurements - 0.31 х 0.94 in / 8 х 24 mm
ring size - 7.5 US
ring weight - 17 grams
ref No 6386

https://en.gabilo.com/kamni/turmalin/