Sherlock Holmes, quoted in the title, tells Watson about how jewelry is so irresistible that it causes crime in "The Adventure of the Blue Carbuncle." Now my Arbitrary Santa has sent me a gorgeous piece of Sherlock jewelry.

This gift was surprisingly hard to photograph because of the glint off the dome. But it's a necklace made from an old map of the great detective's neighborhood, near the intersection of Baker Street and George Street in London.

I love this gift SO MUCH! I have on my profile how I love Holmes and love nerdy jewelry, and this is a wonderful combination of things I love.

But there is one sad thing. The parcel arrived at my house on a VERY, VERY rainy and humid day. Although it had traveled safely all the way to New England from Germany, the label was all melty and wet by the time I got home from work. So, German Arbitrary Day Santa, the only thing I know about you is that you are German. I don't know your Reddit name (if you included it in the first place). So if you want to come out so I can thank you properly, please leave a comment. Otherwise, just know that this is a really lovely present and I will really get a lot of wear out of it and treasure it.