FindingKing Black Gem Jar Jewelry Tray Insert Gemstone Display Clock Parts Unit This is a new gemstone insert that contains 50 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 1/16" (27 mm) The insert measure approximately 14 1/4" x 7 3/4" x 3/4" (36 cm x 196 x 19 mm)