Perfectly Fine necklace even if I don't buy the healing properties idea
The clasp for the necklace is a very strong magnet.  It will not just pull off, you have to "split" the magnet to get it to open.  This is nice as it won't fall off easily at all.  The Obsidian is not uniform in color, which shows it is authentic as no naturally occurring mineral will be color perfect.  I would note however, that the color difference just enhances the necklace, it does not subtract from it.  There is a nice card with it that explains where Obsidian comes from and its healing properties.  It was interesting, if not convincing.  It might be a little overpriced given the cost of Ice obsidian that I looked up, but it will be a nice gift and my granddaughter who likes these things will really appreciate the description.
Rating: 4 stars