Hi NYC, the knot portion is not attached to the two ends with the beads, it's just kinda floating there. I use that knot to make paracord NFL plaque bracelets for the diehard fans in my family for football season. You could thread some thin thread through the knotted section to keep it together and then try to untie the little knots at the ends or cut them really close and then pull them both out of the knotted section. Then when you want to put it back together, just thread both sides back through. It's hard to tell but the knot may be really tight to pass a needle and thread through and it might stretch or lose shape.
The knot is really, really easy to do if you wanted to grab some thin cord of your choosing and make your own necklace, you would just use the crossed cords as you 2 center threads and you'd have to use a cigarette liter to burn the ends so they don't fray.
It all sounds like a pain but it is really easy to do and there are tons of YouTube videos for tying paracord.
Anywho, I do adore you hello kitty necklace, if you happen to see another, I'd certainly be interested. I received my pendant a few days ago and now I'm looking for one more to do a three tier necklace. With two tiers being detachable with jump rings [emoji4]
You gotta post a mod shot of your lavender hello kitty. I'm looking forward to seeing it [emoji5]️