12 Glass-top Square Gem Jars - Black Jewelry Display Package of 12 Gem Jars A Gem Jar with a clear top to display precious stones. Reversible foam pad has black and white sides to provide optimum display capabilities. Perfect for displaying gems and jewelry at trade shows or retail counter top displays Outside Dimensions: 1-3/8" x 1-3/8" x 1/2" - Pad Dimensions: 1-1/4" x 1-1/4" x 1/2"