FindingKing 36 Black Foam Gem Jars Travel Case Display Tray Insert This is a new gemstone foam insert that contains 36 removable clear plastic round jars These will hold all of your loose stones, beads and coins Each gem jar comes with a black insert pad inside and lid The inside diameter of each gem jar measures approximately 1 5/16" (33 mm) The insert measure approximately 14 1/4" x 7 3/4" x 3/4" (36 cm x 197 x 19 mm)