Glass Gem Corn - Rare Heirloom Variety (100+ Seeds) by PowerGrow (USA Grown) Authentic Glass Gem Corn Seeds - Each pack has over 100 Seeds! PowerGrow Glass Gem Corn seeds are certified Organic heirloom seeds Grown in a local USA family heirloom garden...isolated from other corn varieties so they are pure Glass Gem seeds Glass Gem is a beautiful, almost translucent hard kernel corn Easy to Grow, and guaranteed to be authentic when purchased from BGS Supplies and PowerGrow