Sgian is the Gaelic for blade or sharp, and Dubh is the word for black or hidden.

They are traditionaly worn with kilts, and hidden in the right sock. When a guest its polite to leave all weapons at the door, these are "ceremonial" insurance.

Originally they were made from Oak buried in peat bogs, with Amber set in them. This is made from a piece of 30,000(not a typo) year old wood from New Zealand. The stone is Jasper after the name of the owner. The black is mahogany, and the white is silver.

This is more of a modern interpretation of a Sgian Dubh. It lacks a waste, so would not sit that well in a sock, and it has funny features such as a bottle opener, screwdriver, and breathing tube(for all those times you have to hide under water ;-) Oh and you can kill people with it.