White Foam Full-Size Tray Liner for 28.57mm Gem Jars Kilns & Ovens Use this low-temperature green compound

Use this low-temperature green compound when you need to polish at lower rpms

such as closing jump rings

Wall height: 1

making it ideal for neck rings and shorter necklaces

one side is a soft (medium density) Arkansas stone

White Foam Full-Size Tray Liner for 28.57mm Gem Jars Kilns & Ovens Use this low-temperature green compoundThis tray liner is ideal for keeping gemstones and more sorted, organized and easy to find. The clear jars (1 1 8" diameter) nest perfectly inside the liner and still allow you to easily see the contents of each jar. The white foam liner is 1 2" thick and fits in full size sample trays; includes 50 round gem jars.