I have a necklace with a hunk of titanium in it. only it's the kind with all the colors but it's white what is

Question

the lady at the store called it a titanium diamond but i cant find anything about it it does have traces of color but it's mostly white

Answer 1

About 95% of titanium ore extracted from the Earth is destined for refinement into titanium dioxide (TiO2), an intensely white permanent pigment used in paints, paper, toothpaste, and plastics.

Titanium is non-toxic even in large doses and does not play any natural role inside the human body.