Gemstone Black Foam Tray Liner with 24 Cups Store and display your gemstones in this standard size black foam tray liner. Black foam gem jar display tray insert pad that holds 24 gem cups These will hold all of your loose stones, beads, findings, and coins This Foam Insert is 14 inches long by 8 inches wide and fits in all standard size jewelry trays. Cup Diameter: 1-3/4" Cups are removable from insert pad, Each gem jar cup has a black foam insert that can be removed or cut down if additional space is needed