A card game that deepens knowledge using 60 mineral cards. I received this as a gift, but I'm selling it because I haven't used it. Unused, I checked the contents once. - Brand: KUMON - Product Name: Gem Discovery Game - Set Contents: 60 mineral cards, 12 treasure cards, 4 hint cards, 1 instruction manual, 1 hint case - Target Age: 5 years and up - Game Type: Card game - Learning Elements: Knowledge, comparison, prediction Thank you for looking.