This is a wonderful inquiry due to the fact that there are 2 solutions: of course as well as no! Initially the No.
You don’t require anymore than one diffuser necklace unless you plan to put on more compared to individually! When you’ve applied a drop of oil to the terra-cotta clay, it will certainly take about a day to diffuse from the clay.
On the 2nd day, merely apply a various essential oil by smearing it over the surface. The oil that was there the day in the past will certainly be mostly (yet not totally) lessened already allowing the oil you use today to be the predominant fragrance floating from the clay.
In time, your clay piece will certainly hold your signature aroma; a refined mix of all your favourite oils!
Now for the Yes. Yes, you require even more than one pendant since it would be fun to have a few on the go! It would certainly allow you to be wearing one while the one you wore the other day is diffusing just what’s left on it into your home or office! It allows you to devote one pendant to one essential oil and persevere. Plus you have several design alternatives. In other words, it’s simply plain fun!