This necklace is not for the faint of heart, literally. I don't advise wearing this necklace if you have a pace maker. The hematite is magnetic. Magnet's however can be quite theraputic and some poeple really enjoy the benefits. This necklace features a Mahogany Obsidian heart shaped pendant. Beaded with Magnetic hematite, Red Jasper and Snowflake Obsidian. A really heavy, and very nice necklace. It measures 18 inches in length.