I have some clear ones that I use to give rosin. For my personal rosin, I have 4 of the small NugSmasher silicone jars for use, storage. and decarb with their aluminum Decarboxylation Capsule.They are glass they have just a type of paper seal it tends to stick to the top of jar since rosin sticks to it…but mind you I have only been using this jar less then 12 hrs…