No one said self-defense can’t be stylish…or that the worlds of high fashion and high-profile entertainment aren’t cutthroat. Enter the Platinum Mamba knife.

Available for $150,000, the Platinum Mamba was created by Sandrin Knives to be the hardest steel blade there is. The blade alloys employs tungsten carbide, and the haft features Wyoming black jade. Then there are the diamonds, which can stand up to fashion sense as well as punishment.

Of course, the Platinum Mamba is more of an investment piece than the tool of a martial artist. While the odd example might be packed as flashy carries by billionaires, most are destined for safes and display behind unbreakable glass.