The question mark block from super mario world! It was handmade by weaving one tiny Japanese Miyuki Delica Seed Bead together at a time with a needle and thermally bonded Wildfire bead weaving thread. The actual question mark block is about an inch long and a little bit less than an inch wide. It is attached to a 2mm thick black waxed cotton cord by a silver plated jumpring. The cord is finished with fold-over silver plated cord ends, secured with a little bit of E6000 glue, and closes with a silver plated lobster claw clasp.
You can find this necklace and other items on my etsy chop! www.etsy.com/shop/pixelosis
Check out how they're made here