"The Elder Wand," he said, and he drew a straight vertical line on the parchment. "The Resurrection Stone," he said, and he added a circle on top of the line. "The Cloak of Invisibility," he finished, enclosing both line and circle in a triangle, to make the symbol that so intrigued Hermione. "Together," he said, "the Deathly Hallows."
DIY Harry Potter Deadly Hallows pendant! Materials that I used: aluminum wire and silver-plated copper wire. The original DIY instructions: http://pienivarpunen.blogspot.fi/2013/08/diy-riipuksia-alumiinilangasta-arvonta.html