This DIY Mortal Instruments Shadowhunter Stele is also a pen

If you have always wished for a Shadowhunter stele, now you can make your own. You can customize the decoration on your stele to your favorite runes and your personality. And the fun twist to this craft is that it is also a pen, so you can take it with you to school or work and show off your fandom for The Mortal Instruments book series, movie or the Shadowhunters series on Freeform.

Here’s the tutorial video

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DIY Shadowhunter Stele Pen



something to bake your project on: silicone mat and baking tray
bic round stic pen
silver polymer clay
clear quartz crystal point


Start with a Bic Round Stic pen. This brand of pen is preferred because it will not melt or lose its shape while baking. Use a pair of pliers to remove the ink cartridge before you begin. Never bake the pen with the ink inside.

Choose a quartz crystal point that you like. This will be placed at the end of the stele that does not have the ink pen.

Soften and condition the silver polymer clay between your fingers. If you don’t have silver, you can make it out of any color you have and paint the final piece with silver acrylic or spray paint. Roll out a strip of clay that is about an eighth of an inch thick and a little longer than your pen and crystal.

Place the pen on top of the clay and use a blade to cut away the extra on the top and bottom, leaving about half an inch of clay at the bottom to wrap around the crystal.

Position the crystal on the clay, press the crystal and the pen down slightly. Trim one side so that it has a smooth edge and wrap it up and around the pen. Press it down very lightly so the clay does not get a thin spot. Then do the same thing on the other side; trim, and wrap.

Join the seam. Working slowly and carefully, smooth the two edges together. Start from the middle and work up and down. Don’t worry if the ends don’t match up perfectly. The last step is to trim the bottom, so it is nice and flush to the pen opening.

Once the sides are smooth and the bottom is trimmed, it’s time to work on the crystal end. Use your fingers and your clay tools to make sure the crystal is securely encased in the clay.

The next step is to give your stele a slight triangle shape. This will keep it from rolling around on the desk and will define the top and bottom of the stele, which will help when adding runes and decorations.

If your quartz crystal comes loose during this part, make sure to re-secure it in the clay. And you may also need to re-trim the pen end of the stele as well.

It’s important that the pen cartridge will be able to fit back inside the pen after you bake the clay. So make sure the hole is the right size.

Next it’s time to add your runes and decorations. This is where you can really show your personality on your stele. Roll out a thin piece of silver clay and shape the runes at the end near the crystal. You want to make sure to position your decorations so that they don’t make it uncomfortable to hold the pen and write with it.

Bake your piece according to the directions on your clay package. Once the stele is baked and completely cooled, your project is done.


Thanks for crafting with me. If you make a Shadowhunter Stele or any other Mortal Instruments -inspired craft leave me a comment and let me know, or tag a photo on Twitter or Instagram #craftymcfangirl. I’d love to see what you do!


Fandom Jewelry from

Red Nexus necklace inspired by the MOBA League of Legends. This necklace is handmade with a 1.5 inch faceted glass gem surrounded by gold-tone spacer beads, hanging from an 18 inch gold-tone brass chain.

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League of Legends Jewelry: Red Nexus Necklace