FindingKing 25 Black Gem Jars Box Coin Jewelry Display Travel Tray This is a new gemstone insert that contains 25 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 the gem jars are approximately 1" (25 mm) The insert measure approximately 7 3/4" x 7" x 3/4" (196 x 178 x 19 mm)