This game set includes 25 rock specimens and over 150 rock, mineral, and gemstone pieces. It features games like rock bingo, mineral memory, and gem-tac-toe, plus 52 playing cards. The set also contains game boards, instructions, a specimen bag, and educational cards with rock and gem facts. The price drops from $24.99 to $14.99. Shipping is free for prime members, or it adds $6.