New Gemstone Jar Insert & Display Tray For Jewelry Showcases & CountertopsGemstone Insert. 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). Travel Display Box. This is a new travel display tray. This is great for keeping your items secure while traveling and easily displaying them. The latch on the lid helps keep you from loosing any items. It measures approximately 8 1/8" x 7 1/4" x 2" (206 x 120 x 51 mm).